Alternatives to Fiddler
Compare Fiddler alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Fiddler in 2026. Compare features, ratings, user reviews, pricing, and more from Fiddler competitors and alternatives in order to make an informed decision for your business.
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DataImpulse
DataImpulse
DataImpulse - Ethical Provider of Residential, Mobile, and Data Center IPs DataImpulse (dataimpulse.com) is a proxy provider offering a pool of over 90 million ethically sourced residential, mobile, and data center IP addresses from 195 countries. Pricing for residential proxies starts at $1 per GB with a pay-as-you-go model; there are no subscriptions or traffic expiration dates. DataImpulse proxies are suitable for web scraping, SERP monitoring, ad verification, price tracking, and other business activities. They support HTTP/HTTPS and SOCKS5 protocols, as well as rotating and sticky sessions. DataImpulse also offers integration with Scrapy, Selenium, Puppeteer, various proxy managers, browser extensions, and custom tools. Rated 4.8 out of 5 on G2, DataImpulse provides 24/7 human support, advanced targeting options, discounted prices for bulk purchases, and custom features available upon request. -
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Paessler PRTG
Paessler GmbH
Paessler PRTG is an all-inclusive monitoring software solution developed by Paessler. Equipped with an easy-to-use, intuitive interface with a cutting-edge monitoring engine, PRTG optimizes connections and workloads as well as reduces operational costs by avoiding outages while saving time and controlling service level agreements (SLAs). The solution is packed with specialized monitoring features that include flexible alerting, cluster failover solution, distributed monitoring, in-depth reporting, maps and dashboards, and more. PRTG monitors your entire IT infrastructure. All important technologies are supported: • SNMP: ready-to-use and custom options • WMI and Windows Performance Counters • SSH: for Linux/Unix and macOS systems • Traffic analysis using flow protocols or packet sniffing • HTTP requests • REST APIs returning XML or JSON • Ping, SQL, and many moreStarting Price: $2149 for PRTG 500 -
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Postman
Postman
The collaboration platform for API development. Simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Postman is a collaboration platform for API development. Postman's features simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Quickly and easily send REST, SOAP, and GraphQL requests directly within Postman. Automate manual tests and integrate them into your CI/CD pipeline to ensure that any code changes won't break the API in production. Communicate the expected behavior of an API by simulating endpoints and their responses without having to set up a backend server. Generate and publish beautiful, machine-readable documentation to make your API easier to consume. Stay up-to-date on the health of your API by checking performance and response times at scheduled intervals. Provide a shared context for building and consuming APIs, and collaborate in real-time.Starting Price: $12 per user per month -
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HttpMaster
Borvid
HttpMaster is a debugging and testing tool for various HTTP applications with special focus on web APIs and RESTful web services. Key features: - HttpMaster project to store complete definition of HTTP calls in one single place. - Broad set of HTTP properties (HTTP headers, URL encoding, etc.). - Dynamic parameters to simulate variations of input data or create global API values. - Response data validation with logical expressions. - Request chaining to use data from previous request with the next request. - Extensive data upload support, including 'multipart/form-data'. - Request data builder for creating request body with an optional dynamic parameters. - Request item execution with detailed progress monitoring. - Execution groups to create batches of requests. - Comprehensive execution data review and management. - Basic request tool for ad-hoc execution. - Command line interface. - PDF reports. - Support for cURL commands.Starting Price: Starting from $69 -
5
HttpWatch
Neumetrix
Become a debugging and web performance guru with the ultimate in-browser HTTP sniffer. Debug the network traffic generated by a web page directly in the browser without having to switch to a separate tool. Accurately measure the network performance of a web page and view opportunities for boosting its speed. No extra configuration or proxies are required - even with encrypted HTTPS traffic! Quickly find weak SSL configurations and other security-related issues on your web server. Anyone can use the free Basic Edition to send you full log files to help you remotely diagnose errors or performance issues. Use the HttpWatch API to collect performance data from your automated website tests. HttpWatch integrates with Chrome, Edge and Internet Explorer browsers to show you the HTTP and HTTPS traffic that is generated when you access a web page. Select a request in HttpWatch and everything you need to know is display in a tabbed window.Starting Price: $395 one-time payment -
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HTTP Toolkit
HTTP Toolkit
Skim through traffic with highlighting by content type, status & source, or use powerful filtering tools to precisely match the messages that matter to you. Examine the URL, status, headers & body of each request or response, with inline explanations & docs from MDN. Dig into message bodies with highlighting & auto formatting for JSON, HTML, JS, hex and others, all using the power of Monaco, the editor from Visual Studio Code. Precisely match requests, jump to them when they appear, and edit anything: the target URL, method, headers or body. Manually respond directly to requests as they arrive, or pass them upstream, and pause & edit the real response on the way back. Step through HTTP traffic request by request, or manually mock endpoints and errors. Create rules to match requests and respond with your own content, to quickly prototype against new endpoints or services.Starting Price: Free -
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Proxifier
Initex Software
Proxifier allows network applications that do not support working through proxy servers to operate through a SOCKS or HTTPS proxy and chains. Redirect connections of any internet app (browser, email, database, game, etc.) through a proxy. Control access to resources. Route all your connections through a single entry point. Update multiple configurations remotely from a single place. Route internet traffic through faster routes. Lightweight and flexible alternative to VPN. Tunnel your connections through encrypted channels. Use a proxy as a gateway for your internet activities. Assign different proxies or chains to different connections using the rule-based system. Proxifier is always up to date with the latest OS versions, including Windows 11 and macOS Ventura. Native C++ app. No third-party dependencies. Installer size is 4 MB.Starting Price: $39.95 -
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Wireshark
Wireshark
Wireshark is the world’s foremost and widely-used network protocol analyzer. It lets you see what’s happening on your network at a microscopic level and is the de facto (and often de jure) standard across many commercial and non-profit enterprises, government agencies, and educational institutions. Wireshark development thrives thanks to the volunteer contributions of networking experts around the globe and is the continuation of a project started by Gerald Combs in 1998. Wireshark® is a network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network. It has a rich and powerful feature set and is world’s most popular tool of its kind. It runs on most computing platforms including Windows, macOS, Linux, and UNIX. Network professionals, security experts, developers, and educators around the world use it regularly. It is freely available as open source, and is released under the GNU General Public License version 2. -
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Burp Suite
PortSwigger
Burp Suite is a leading range of cybersecurity tools, brought to you by PortSwigger. We believe in giving our users a competitive advantage through superior research. Each new edition of Burp Suite shares a common ancestor. The DNA running through our family tree represents decades of excellence in research. As the industry has shown time and time again, Burp Suite is the tool you can trust with your online security. We designed Enterprise Edition with simplicity as a top priority. Discover easy scheduling, elegant reports and straightforward remediation advice - all in one powerful package. The toolkit that started it all. Find out why Burp Pro has been the penetration testing industry's weapon of choice for well over a decade. Nurturing the next generation of WebSec professionals and promoting strong online security. Community Edition gives everyone access to the basics of Burp.Starting Price: $399 per user per year -
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Xplico
Xplico
Xplico is installed in the major distributions of digital forensics and penetration testing: Kali Linix, BackTrack, DEFT, Security Onion, Matriux, BackBox, CERT Forensics Tools, Pentoo and CERT-Toolkit. Xplico allows concurrent access by multiple users. Any user can manage one or more Cases. The UI is a Web User Interface and its backend DB can be SQLite, MySQL or PostgreSQL. Xplico can be used as a Cloud Network Forensic Analysis Tool. The goal of Xplico is extract from an internet traffic capture the applications data contained. For example, from a pcap file Xplico extracts each email (POP, IMAP, and SMTP protocols), all HTTP contents, each VoIP call (SIP), FTP, TFTP, and so on. Xplico isn’t a network protocol analyzer. Xplico is an open source Network Forensic Analysis Tool (NFAT). At each data reassembled by Xplico is associated a XML file that uniquely identifies the flows and the pcap containing the data reassembled. -
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Fiddler AI
Fiddler AI
Fiddler is a pioneer in Model Performance Management for responsible AI. The Fiddler platform’s unified environment provides a common language, centralized controls, and actionable insights to operationalize ML/AI with trust. Model monitoring, explainable AI, analytics, and fairness capabilities address the unique challenges of building in-house stable and secure MLOps systems at scale. Unlike observability solutions, Fiddler integrates deep XAI and analytics to help you grow into advanced capabilities over time and build a framework for responsible AI practices. Fortune 500 organizations use Fiddler across training and production models to accelerate AI time-to-value and scale, build trusted AI solutions, and increase revenue. -
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LogDog
LogDog
Built from the ground up for mobile developers. Monitor network requests, logs, and events in real-time. Debug faster, ship with confidence. FEATURES: - RealTime Logs: Capture every log from your application and see them appear in instantly in the dashboard - Network Monitoring: See how LogDog captures and analyses HTTP requests and responses - Event Tracking: Watch real-time event logging and analytics collection - Performance Metrics: Monitor app performance in real-time - Request Mocking: One Click to enable request mocking - throw in your own body, headers or statusCode - Any build type: Check logs from your Store builds, TestFlight and of course Xcode builds - Seamless experience: Test events across different session without annoying reattachment - Shake to Debug: Shake your device to toggle various debug features from LogDogStarting Price: $19/month -
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Shadowrocket
Shadow Launch Technology Limited
Shadowrocket is a rule-based proxy utility that captures all HTTP, HTTPS, DNS, and TCP traffic from any app and redirects it to a proxy server, then records and displays each request for detailed inspection. Users define rules by domain match, suffix, keyword, CIDR IP range, or GeoIP lookup, import configurations via URL or iCloud Drive, and measure usage and speed across Wi-Fi, cellular, direct, and proxy connections. It also blocks ads by domain or user-agent rules, supports local DNS mapping, decrypts HTTPS traffic, rewrites URLs, and fully supports IPv6. Advanced script filters, multi-level forward proxying, and compatibility with kcptun, cloak, gost, and v2ray plugins extend its flexibility, while DNS-over-HTTPS, DNS-over-TLS, and DNS-over-QUIC ensure secure name resolution. Shadowrocket runs seamlessly on cellular networks and integrates SSH tunneling with UDP gateway support, making it a powerful tool for monitoring, filtering, and optimizing network traffic.Starting Price: Free -
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NetworkMiner
Netresec
NetworkMiner is a network forensics tool that extracts artifacts such as files, images, emails, and passwords from captured network traffic in PCAP files. It can also capture live network traffic by sniffing a network interface. Detailed information about each IP address in the analyzed network traffic is aggregated into a network host inventory, which can be used for passive asset discovery and to get an overview of communicating devices. NetworkMiner is primarily designed to run on Windows but can also be used on Linux. Since its first release in 2007, it has become a popular tool among incident response teams and law enforcement and is used by companies and organizations worldwide.Starting Price: $1,300 one-time payment -
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tcpdump
tcpdump
Tcpdump is a powerful command-line packet analyzer that allows users to display the contents of network packets transmitted or received over a network to which the computer is attached. It operates on most Unix-like systems, including Linux, Solaris, FreeBSD, NetBSD, OpenBSD, and macOS, utilizing the libpcap library for network traffic capture. Tcpdump can read packets from a network interface card or from a previously created saved packet file, and it provides options to write packets to standard output or a file. Users can apply BPF-based filters to limit the number of packets processed, enhancing usability on networks with high traffic volumes. The tool is distributed under the BSD license, making it free software. In many operating systems tcpdump is available as a native package or port, which simplifies installation of updates and long-term maintenance.Starting Price: Free -
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Apache Traffic Server
Apache Software Foundation
Apache Traffic Server™ software is a fast, scalable and extensible HTTP/1.1 and HTTP/2 compliant caching proxy server. Formerly a commercial product, Yahoo! donated it to the Apache Foundation, and currently used by several major CDNs and content owners. Improve your response time, while reducing server load and bandwidth needs by caching and reusing frequently-requested web pages, images, and web service calls. Scales well on modern SMP hardware, handling 10s of thousands of requests per second. Easily add keep-alive, filter or anonymize content requests, or add load balancing by adding a proxy layer. APIs to write your own plug-ins to do anything from modifying HTTP headers to handling ESI requests to writing your own cache algorithm. Handling over 400TB a day at Yahoo! both as forward and reverse proxies, Apache Traffic Server is battle hardened. -
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Sniffnet
Sniffnet
Sniffnet is a network monitoring tool designed to help users easily keep track of their Internet traffic. Whether gathering statistics or inspecting in-depth network activities, Sniffnet provides comprehensive coverage. It emphasizes user experience, ensuring ease of use compared to other cumbersome network analyzers. Completely free and open source, Sniffnet is dual-licensed under MIT or Apache-2.0, with the full source code available on GitHub. Developed entirely in Rust, it leverages this modern programming language to build efficient and reliable software, emphasizing performance and safety. Key features include selecting a network adapter to inspect, applying filters to observed traffic, viewing overall statistics and real-time charts of Internet traffic, exporting comprehensive capture reports as PCAP files, identifying over 6,000 upper-layer services, protocols, trojans, and worms, discovering domain names and ASNs of hosts, pinpointing connections in the local network.Starting Price: Free -
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WireMock
WireMock
WireMock is a simulator for HTTP-based APIs. Some might consider it a service virtualization tool or a mock server. It enables you to stay productive when an API you depend on doesn't exist or isn't complete. It supports testing of edge cases and failure modes that the real API won't reliably produce. And because it's fast it can reduce your build time from hours down to minutes. MockLab is a hosted API simulator built on WireMock, with an intuitive web UI, team collaboration and nothing to install. The 100% compatible API supports drop-in replacement of the WireMock server with a single line of code. Run WireMock from within your Java application, JUnit test, Servlet container or as a standalone process. Match request URLs, methods, headers cookies and bodies using a wide variety of strategies. First class support for JSON and XML. Get up and running quickly by capturing traffic to and from an existing API. -
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Bugsee
Bugsee
See video, network and logs that led to bugs and crashes in live apps. No need to reproduce intermittent bugs. With Bugsee, all the crucial data is always there. All important traces from your app. Now you know what exactly led to unexpected behavior. See the video of all user actions, communication with the backend and system state that led to the problem. Get statistics on similar crashes. See trends broken down by device type, OS version and time. Get the exact filename, method and a line number of the crash. See states of all other threads running at the time of the crash. See all HTTP and HTTPS requests and responses – headers and body – from and to your app. Replay all app’s console logs synchronized to the video and network traffic.Starting Price: $99 per month -
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Octrafic
Octrafic
Octrafic is an open source, AI-powered command-line tool designed for automated API testing and exploration, allowing users to interact with APIs using natural language instead of writing scripts or configuring complex testing frameworks. By pointing the tool to any HTTP API or OpenAPI specification, users can describe what they want to test in plain English, and the built-in AI agent automatically generates test scenarios, executes real HTTP requests, validates responses, and produces structured results. It handles the full testing workflow, including endpoint discovery, request construction, schema validation, and error detection, enabling developers to focus on testing logic rather than low-level implementation details. It supports real-time execution against live APIs, ensuring accurate status codes and behavior without relying on mocks, and can export results into styled PDF reports for sharing with teams or stakeholders.Starting Price: Free -
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MacHTTP-js
MacHTTP-js
MacHTTP-js is currently available for preview on macOS now. As a brand new application, MacHTTP-js includes features never envisioned in the original when it was first released in 1992. MacHTTP-js is written from the ground up using the node.js platform, which means it is a cross-platform application that can run on macOS, Windows, and Linux operating systems. MacHTTP-js is a full-featured Web server for 21st century desktops and servers. A "preview" release is available now for Mac users, followed by a general release for Windows 10 and Linux computers, including support for Docker. This is a full-featured release for macOS and other O/S versions will follow shortly. -
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API Tester
API Tester
API Tester is a completely free mobile app available on iOS, Android, macOS, and watchOS. It is a functional API testing tool that allows users to complete compound tasks on any device. - Test any API on the go: REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS. - GET, POST, PUT, PATCH, DELETE, etc. HTTP request methods are supported. - Perform the API calls with any kind of request data encoding and transfer type. - Import collections from Swagger, Postman, and YAML, or import requests using cURL, as well as export created requests via link or cURL. - Use a powerful GraphQL editor with full-scale experience. - WebSocket testing tool is available: handles connection and message exchange via WS or WSS. The API Tester mobile app allows you to get the job away from your workstation. Save time, work from anywhere!Starting Price: Completely free -
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Diladele Web Filter
Diladele
User tries to access a web site in the Internet. Browser connects to that site either directly or using explicitly configured proxy settings. Requests and remote site responses get into Squid, are authenticated and redirected to Web Safety ICAP filter running either locally or remotely. Requests and responses are analyzed and access is allowed or denied based on configured policy settings. Information about request and response is stored in the database. Web Safety is an ICAP web filter that directly plugs into Squid proxy. This allows it to filter URLs and do deep content inspection of encrypted HTTPS traffic. Encrypted explicit content is blocked easily. Performs deep content inspection of web pages and blocks everything containing adult explicit language and links to questionable content. General purpose web sites (Google Search, Google Images, Bing or YouTube) are filtered as well and all inappropriate content is blocked. -
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PFLB
PFLB
PFLB is an AI-powered load testing platform where you can simulate massive traffic to your websites, and applications. It’s easy to use and super helpful for teams that want to ensure their product is ready to scale. Features: Realistic testing with scenario-based traffic simulation. Importing your production load profile with Google Analytics integration. Easy scripting with an intuitive no-code editor. Executing advanced JMeter scenarios at scale. Resolving bottlenecks with AI-powered performance insights. Discovering load testing results with Grafana dashboards. Protocols: HTTP, HTTPS, gRPC, JDBC, JMS, AMQP, MQTT, Kafka.Starting Price: $50/month -
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GetAPI
GetAPI
GetAPI is a lightweight, native macOS HTTP client designed to simplify the process of making and testing REST API calls through a clean and minimal interface. Built as an alternative to tools like Postman or Insomnia, it allows developers to import existing collections, send HTTP requests, and instantly view structured responses without unnecessary complexity or setup. It is developed specifically for macOS using native technologies such as Swift and Objective-C, ensuring fast performance, smooth integration with the operating system, and a polished user experience. It supports essential API testing workflows, including request composition, navigation between requests, and quick inspection of response data, while maintaining a streamlined approach focused on speed and usability. GetAPI operates entirely locally, does not collect or sync user data to the cloud, and emphasizes privacy and control over sensitive API information.Starting Price: $39 per month -
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Application Load Balancer runs on OSI Layer 7, and helps use HTTP request attributes to distribute traffic and form or modify HTTP responses. All requests to your apps are recorded, and you can analyze events in the load balancer’s access logs. Distribute your cloud resources to multiple geographically distributed availability zones, and maintain your applications' availability even if one of the zones becomes unavailable. Use different load balancers for different applications If you use the Yandex Cloud infrastructure to deploy multiple applications, configure L4 and L7 load balancers to service them. Create backends for new app versions and shift the load between them in the HTTP router, changing the weight of the old and new backends.
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Mockoon
Mockoon
Mockoon offers tons of features that makes API mocking a breeze. Get Mockoon latest version and start creating mock APIs! Create an unlimited number of mock API with unlimited number of routes and run them in parallel. Use the CLI to run your mock APIs in any headless or automated environment: servers, CI, GitHub Actions, etc. Mock API import / export with Swagger/OpenAPI format support. Serve multiple rules-triggered or random responses with any headers body, or HTTP status codes. Serve your mock API over TLS with self-signed certificate. Add any response headers to your routes and mock API. With auto-completion. Add latency at environment or route level or even both. All incoming requests and outgoing responses are logged for easier debugging. Redirect all non-defined routes to the specified host with Mockoon's proxy mode. File serving with automatic mime type detection and templating support. -
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Abyss Web Server
Aprelium
Abyss Web Server is a compact web server available for Windows, macOS, and Linux operating systems. Despite its small footprint, it supports HTTP/2, secure SSL/TLS connections (HTTPS), automated provisioning and renewal of free certificates from Let's Encrypt® (ACME v2), IPv6, on-the-fly HTTP compression, dynamic content generation through CGI/FastCGI scripts, ISAPI extensions, native ASP.NET, HTTP/HTTPS/WebSocket reverse proxying, eXtended Side Includes (XSSI), custom error pages, password protection, IP address control, anti-leeching, bandwidth throttling, and log rotation. It also features an automatic antihacking system as well as a multilingual remote web management interface that makes its configuration as easy as browsing a web site.Starting Price: $59.95 one-time payment -
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NativeRest
NativeSoft
NativeRest is a high-performance, memory-efficient REST API client available for Windows, macOS, and Linux. Unlike Electron-based apps, it is a fully native application, which results in faster startup times and significantly lower memory and CPU usage. NativeRest supports offline work with local and cloud-based workspaces, enabling both individual and team collaboration. It includes a preconfigured proxy server to enhance privacy and security during API testing. Users benefit from an intuitive interface, powerful environment variable management, customizable HTTP methods, and code snippet generation in over 15 programming languages. A portable version is also available, requiring no installation or admin rights.Starting Price: $199 -
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Beeceptor
Beeceptor
Beeceptor is a high-performance, no-code platform that eliminates development bottlenecks through instant API mocking and real-time traffic inspection. Don't wait for backend teams to deploy; spin up a named subdomain in seconds and start integrating immediately. Key Capabilities: - Multi-Protocol Support: Simulate REST, SOAP, GraphQL, and gRPC endpoints without writing server-side code. - AI-Powered Mocking: Use AI to generate realistic, contextually relevant test data or import OpenAPI/Swagger for CRUD-ready mocks. - Chaos Engineering: Test "unhappy paths" by simulating latencies, timeouts, and rate limits. - Local Tunneling & Proxying: Expose localhost via HTTPS and inspect live webhooks or mobile traffic in real-time. Decouple your frontend and mobile teams, stabilize CI/CD by removing third-party dependencies, and go from API design to functional mock in minutes. Beeceptor scales from solo devs to enterprise-grade integration testing.Starting Price: $10 per month -
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Proxyman
Proxyman LLC
## Features * 🍏 **macOS-optimized:** Crafted with Swift and Objective-C, leveraging Apple SwiftNIO for high-performance networking. * 🖥️ **Apple Silicon ready:** Full compatibility with M1, M2, and M3 chips. * 🚀 **Modern OS support:** Designed for macOS Ventura and Sonoma. * 🌐 **Seamless traffic interception:** Effortlessly capture HTTP/HTTPS and WebSocket data from browsers, iOS, and Android. * 🎨 **User-friendly interface:** Sleek and intuitive design for ease of use. * 🔎 **Advanced filtering:** Multiple options for precise data analysis. * 📱 **Cross-platform setup:** Detailed guides for iOS simulator and physical iOS/Android devices. * 🛠️ **Essential debugging toolkit:** Compose, Repeat, Wildcard/Regex Filtering, Column Customization, and more. * 🔧 **Pro-level features:** Breakpoints, Local/Remote Mapping, Blacklisting. ...Starting Price: 69$ -
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Impero Webcheck
Impero Software
AI-powered internet filtering for schools. The internet, minus the harmful stuff. The internet is in an incredible resource, but not everything online is conducive to learning. Impero’s robust internet filtering for schools analyses content in real-time to ensure students are protected online, in the classroom and beyond. Our web filter for schools uses an AI categorization name service (CNS) to comb through all HTTP, HTTPS and FTP web traffic and block web content containing any pornography, substance abuse, extremism and many other categories of sensitive material. Impero Webcheck protects school networks from encrypted traffic – including virus-based threats and proxy avoidance – and ensures that every device on the network is secure. -
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Squid
Squid
Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on most available operating systems, including Windows, and is licensed under the GNU GPL. Squid is used by hundreds of Internet Providers worldwide to provide their users with the best possible web access. Squid optimizes the data flow between client and server to improve performance and caches frequently-used content to save bandwidth. Squid can also route content requests to servers in a wide variety of ways to build cache server hierarchies that optimize network throughput. Thousands of websites around the Internet use Squid to drastically increase their content delivery. Squid can reduce your server load and improve delivery speeds to clients. -
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ApiScout
ApiScout
ApiScout is your one-stop environment for building, testing, and describing Rest Apis. It is incredibly fast. No waiting or restarting. No spinners. Fast on all Mac devices. Compose requests, inspect responses ApiScout is the only HTTP Client tool you will need while building, testing, and describing your APIs. Organize requests into folders Dynamic values Use dynamically calculated values, values from previous responses, environment variables, computed hashes, etc. in every part of your requests. Environment variables Use environments to group related sets of values together. It's very handy for switching user accounts, servers, or anything else. Define variables like tokens, server base URLs, or credentials and re-use them globally for a seamless development/production workflow.Starting Price: $5 per month -
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Mocki
Mocki
If you want to create a simple API for testing purposes, simply enter a response body and get your custom API URL. Use Mocki to create a fully-fledged mock API. Using Mocki you can create, run, and deploy mock APIs. Use your mocks to design your API, serve static responses, simulate error scenarios, and remove dependencies to external services. Sign up today for a free 7-day trial. Sync your service with your code repository to keep your mock service up to date with the latest changes without manual steps. Using our managed hosting solution your mock service is always available for any consumer. Access a dashboard to gather insights on how your mock service is used. Using our open source CLI you can run your services locally. This enables you to run your service without requiring an internet connection to reach external services. A mock API can also be useful when testing backend apps. A common case is that your API or service needs to call external services over HTTP.Starting Price: $15 per month -
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Go REST
Go REST
Go REST is a GraphQL and RESTful API platform for testing and prototyping that delivers fake data with real responses, available 24/7 via public endpoints for users, posts, comments, and todos. It supports multiple API versions with full search on all fields, pagination (page and per_page), rate-limiting headers, and response format negotiation. Standard HTTP verbs are supported, and mutating requests require an access token via HTTP Bearer or query parameter. Nested resources let you retrieve related data, user posts, post comments, and user todos, while request and response logging, customizable rate limit,s and daily data resets ensure a clean testing environment. A GraphQL endpoint at /public/v2/graphql offers schema-driven queries and mutations. -
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Kestrel
Microsoft
Kestrel is a cross-platform web server for ASP.NET Core. Kestrel is the web server that's included and enabled by default in ASP.NET Core project templates. Kestrel supports HTTPS, HTTP/2 (except on macOS), Opaque upgrade used to enable WebSockets, Unix sockets for high performance behind Nginx. Kestrel is supported on all platforms and versions that .NET Core supports. Some browsers require granting explicit permission to trust the local development certificate. Project templates configure apps to run on HTTPS by default and include HTTPS redirection and HSTS support. The Kestrel web server has constraint configuration options that are especially useful in Internet-facing deployments. There's a separate limit for connections that have been upgraded from HTTP or HTTPS to another protocol (for example, on a WebSockets request). The default maximum request body size is 30,000,000 bytes, which is approximately 28.6 MB. -
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EtherApe
EtherApe
EtherApe is a graphical network monitor for Unix systems, modeled after Etherman, that displays network activity graphically, with hosts and links changing in size based on traffic volume and color-coded protocols. It supports various devices, including FDDI, ISDN, PPP, SLIP, and WLAN, as well as several encapsulation formats. Users can filter displayed traffic and capture data live from the network or read from a file. Node statistics can be exported for further analysis. The tool offers link layer, IP, and TCP modes, allowing users to focus on specific protocol stack levels. It provides detailed information on each node and link, including protocol breakdown and traffic statistics. EtherApe is open source software released under the GNU General Public License. A single node can be centered on the display and several user-chosen nodes can be arranged in an inner circle with other nodes around. An alternative display mode arranges nodes in "columns".Starting Price: Free -
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Snort
Cisco
Snort is the foremost Open Source Intrusion Prevention System (IPS) in the world. Snort IPS uses a series of rules that help define malicious network activity and uses those rules to find packets that match against them and generates alerts for users. Snort can be deployed inline to stop these packets, as well. Snort has three primary uses: As a packet sniffer like tcpdump, as a packet logger — which is useful for network traffic debugging, or it can be used as a full-blown network intrusion prevention system. Snort can be downloaded and configured for personal and business use alike. Once downloaded and configured, Snort rules are distributed in two sets: The “Community Ruleset” and the “Snort Subscriber Ruleset.” The Snort Subscriber Ruleset is developed, tested, and approved by Cisco Talos. Subscribers to the Snort Subscriber Ruleset will receive the ruleset in real-time as they are released to Cisco customers. -
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RapidAPI
Nokia
RapidAPI for Mac is a powerful HTTP client designed specifically for macOS, enabling developers to test, build, and document APIs in one intuitive interface. It allows users to send various HTTP requests, inspect server responses, and iterate quickly during development. With its clean and native macOS design, developers can easily compose requests and manage API workflows without complexity. The tool also supports API description using JSON Schema and integrates with standards like Swagger and RAML. It simplifies API development by combining testing and documentation in a single environment. Developers can generate client code and export API definitions seamlessly. Overall, RapidAPI for Mac helps streamline API development with speed and efficiency. -
41
CommView
TamoSoft
CommView is a powerful network monitor and analyzer designed for LAN administrators, security professionals, network programmers, home users…virtually anyone who wants a full picture of the traffic flowing through a PC or LAN segment. Loaded with many user-friendly features, CommView combines performance and flexibility with an ease of use unmatched in the industry. This application captures every packet on the wire to display important information such as a list of packets and network connections, vital statistics, protocol distribution charts, and so on. You can examine, save, filter, import and export captured packets, view protocol decodes down to the lowest layer with full analysis of over 100 supported protocols. With this information, CommView can help you pinpoint network problems and troubleshoot software and hardware. The newest CommView version 7.0 introduced SSL/TLS traffic decryption on the fly. -
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Arkime
Arkime
Arkime is an open source, large-scale, full packet capturing, indexing, and database system designed to augment existing security infrastructure by storing and indexing network traffic in standard PCAP format. It offers full network visibility, facilitating the swift identification and resolution of security and network issues. Security teams gain access to the necessary network visibility data essential for responding to and investigating incidents to expose the full attack scope. Designed to be deployed across multiple clustered systems, Arkime provides the ability to scale to hundreds of gigabits per second. It allows security analysts to respond, reconstruct, investigate, and confirm information about the threats within your network, enabling appropriate responses quickly and precisely. As an open-source platform, Arkime provides users with the benefits of transparency, cost-effectiveness, flexibility, and community support.Starting Price: Free -
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Bitdive
Bitdive
BitDive is a zero-code quality and test automation platform for Java, Kotlin, Spring Boot and other JVM-based applications that captures real executions and converts them into reusable, deterministic test scenarios you can replay in CI, staging or on a developer machine without writing or maintaining test code. BitDive runs as a lightweight library dependency and records full context from real traffic including HTTP/gRPC requests and responses, method calls, SQL queries with parameters and results, service interactions and timings, enabling deep method-level observability, distributed tracing, performance profiling and semantic drift detection. Its capture-replay-verify loop lets teams automatically generate regression suites and JUnit tests from actual executions, reproduce and debug production bugs locally with full execution chains, eliminate fragile mocks and flaky tests, and validate behavior changes before deployment. BitDive also visualizes service maps and heatmaps.Starting Price: Free -
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WinDump
WinPcap
WinDump is the Windows version of tcpdump, the command line network analyzer for UNIX. WinDump is fully compatible with tcpdump and can be used to watch, diagnose and save to disk network traffic according to various complex rules. It can run under Windows 95, 98, ME, NT, 2000, XP, 2003 and Vista. WinDump captures using the WinPcap library and drivers, which are freely downloadable from the WinPcap website. WinDump supports 802.11b/g wireless capture and troubleshooting through the Riverbed AirPcap adapter. WinDump is free and is released under a BSD-style license. WinDump is able to use the interfaces exported by WinPcap. WinDump can run on all the operating systems supported by WinPcap. WinDump is the porting of tcpdump. It is possible to launch more than one session (on the same network adapter or on different adapters). Except for the increased CPU load, there are no drawbacks in using multiple applications at the same time.Starting Price: Free -
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Oracle Cloud Infrastructure (OCI) Flexible Load Balancing enables customers to distribute web requests across a fleet of servers or automatically route traffic across fault domains, availability domains, or regions—yielding high availability and fault tolerance for any application or data source. The portfolio comprises two services—Oracle Cloud Infrastructure Flexible Load Balancer (OCI Load Balancer) and Oracle Cloud Infrastructure Flexible Network Load Balancer (OCI Network Load Balancer). OCI Flexible Load Balancer primarily manages HTTP/HTTPS traffic and provides advanced routing features that distribute the requests based on the requests’ contents. In contrast, OCI Flexible Network Load Balancer performs at low latency, offering extreme performance. OCI Flexible Load Balancer offers a public IP address to front-end internet traffic within a single availability domain or across regions, ensuring applications are always available during peak demand.Starting Price: $0.0243 per hour
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AnyIP
AnyIP
With decades of combined experience, we know what it takes to send requests anonymously and with speed. We provide the cheapest mobile and residential rotating proxies in the industry with the help of our infrastructure. AnyIP provides a versatile proxy service featuring a vast pool of over 100 million mobile and residential IPs across 38 countries, supporting HTTP, HTTPS, and SOCKS5 protocols. Their platform offers both rotating and sticky IP options, with an impressive 98.6% request success rate and rapid response times. Users benefit from unlimited IP rotation, enabling seamless switching between IPs to meet diverse project requirements. AnyIP's simplified pricing model charges $2 per gigabyte, encompassing both mobile and residential proxies without additional fees, and includes a rollover feature for unused data. The service is compatible with various software and supports multiple team members, with the number of users varying by plan.Starting Price: $25 per month -
47
PentestBox
PentestBox
PentestBox is an Opensource PreConfigured Portable Penetration Testing Environment for the Windows Operating System. PentestBox was developed to provide the best penetration testing environment for Windows users. By default PentestBox runs like a normal user, no administrative permission is required to launch it. To make PentestBox more awesome we have also included HTTPie, HTTPie is a command line HTTP client. Its goal is to make CLI interaction with web services as human-friendly as possible. It provides a simple http command that allows for sending arbitrary HTTP requests using a simple and natural syntax, and displays colorized output. HTTPie can be used for testing, debugging, and generally interacting with HTTP servers. PentestBox also contains a modified version of Mozilla Firefox with all the security addons pre installed in it. -
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GonzoProxy
GonzoProxy
GonzoProxy has a constantly updated database of resident and mobile proxies, available only to our clients. With targeting to country, region, city and provider. Key benefits: - Ability to buy a port from 100MB - no KYC verification - Targeting (by geo/operators) - high bandwidth - Setup in less than one minute for any GEO, over 170 countries - payment by crypto - Rewards for unused traffic Technical points: - IP rotation on the port - IP swap every 1-15 minutes - Socks5 protocol, http(s) - access by ip : port or login/passwordStarting Price: $4 for 1GB -
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LocalCan
LocalCan
LocalCan for macOS is the leading Ngrok alternative, known for its exceptional developer experience. It significantly reduces development time spent on building and testing apps by offering .local domains and public URLs, making it easy to share with clients and stakeholders. It also streamlines the testing of webhooks, OAuth integrations, and more. You can choose to use localcan.dev or your own custom domain. Local domains (.local) are special top-level domains used in local or private networks. They are the most efficient way when you want to test your apps over https or on different devices connected to your Wi-Fi. You can publish unlimited number of .local domains on your local network. Inspect traffic & tests webhook functionality, replay request to evaluate system responses and traffic integrity.Starting Price: $67 -
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Azure Load Balancer
Microsoft
Load-balance internet and private network traffic with high performance and low latency. Instantly add scale to your applications and enable high availability. Load Balancer works across virtual machines, virtual machine scale sets, and IP addresses. Equipped for load-balancing network layer traffic when high performance and super-low latency are needed. Standard Load Balancer routes traffic within and across regions, and to availability zones for high resiliency. Create highly available and scalable apps in minutes with built-in application load balancing for cloud services and virtual machines. Load Balancer supports TCP/UDP-based protocols such as HTTP, HTTPS, and SMTP, and protocols used for real-time voice and video messaging applications. Manage traffic between virtual machines inside your private virtual networks, or use it to create multiple-tiered hybrid applications.
