Alternatives to RequestBin
Compare RequestBin alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to RequestBin in 2026. Compare features, ratings, user reviews, pricing, and more from RequestBin competitors and alternatives in order to make an informed decision for your business.
-
1
FastHook
FastHook.io
FastHook is a webhook infrastructure and event delivery platform built for developers and product teams that need a reliable way to receive, inspect, transform, route, and deliver webhook traffic. It acts as a programmable layer between incoming event sources and downstream destinations, making it easier to debug integrations, monitor event flow, and control how webhook data moves through a system. The product lets teams create sources, destinations, and connections so they can ingest webhook requests, inspect payloads and metadata, apply routing or transformation logic, and forward events to the right services. It includes tooling for viewing requests and events, managing retries, tracking delivery outcomes, and understanding failures when integrations break. FastHook is designed to reduce the operational pain of webhook-based systems by giving teams better observability, replayability, and control over event processing. It can be used for a variety of integration and automationStarting Price: Free -
2
Webhook.site
Webhook.site
Webhook.site is a tool for testing, transforming, and automating web requests, webhooks, and emails through unique URLs and email addresses that show everything sent to them instantly. With Webhook.site, users receive a unique, random URL that can be used to test and debug webhooks and HTTP requests, inspect payloads, headers, query strings, and request details in real time, and replay items later when troubleshooting or reprocessing failed flows. It helps remove the frustration of building software and automations that communicate through webhook or email by making requests visible, persistent, and easier to understand. Webhook.site also supports Custom Actions, a graphical workflow editor that runs when a URL receives a request or email, allowing users to connect incompatible APIs, convert an HTTP request to an email or vice versa, transform, validate, and process requests, and build workflows that would otherwise require development work.Starting Price: Free -
3
Webhook Relay
Webhook Relay
Webhook Relay is a secure tunneling and webhook forwarding platform that lets teams receive webhooks from any source on localhost, on-premise systems, private networks, laptops, Kubernetes clusters, and internal services without exposing private IPs or opening inbound firewall ports. Its main services include Webhook Forwarding, which is secure and unidirectional by default with optional request and response transformation, and Bidirectional Tunneling, which provides fast tunnels for direct access to any HTTP service, internal API, website, backend app, frontend app, or AI model. Users can create public Webhook Relay endpoints, specify one or more internal destinations, run the relay agent through CLI or Docker, and securely tunnel incoming webhooks to private targets. It supports real-time payload and response inspection, request forwarding to multiple destinations, static outgoing IPs for allowlisting, custom subdomains, non-expiring tunnel domains, encrypted tunnels, etc.Starting Price: $8.99 per month -
4
Fiddler
Progress Software
Capture all HTTP(S) traffic between your computer and the Internet with Telerik Fiddler HTTP(S) proxy. Inspect traffic, set breakpoints, and fiddle with requests & responses. Fiddler Everywhere is a web debugging proxy for macOS, Windows, and Linux. Capture, inspect, monitor all HTTP(S) traffic between your computer and the Internet, mock requests, and diagnose network issues. Fiddler Everywhere can be used for any browser, application, process. Debug traffic from macOS, Windows, or Linux systems and iOS or Android mobile devices. Ensure the proper cookies, headers, and cache directives are transferred between the client and server. Supports any framework, including .NET, Java, Ruby, etc. Mock or modify requests and responses on any website. It’s a quick and easy way to change the request and responses to test websites without changing code. Use Fiddler Everywhere to log all HTTP/S traffic between your computer and the Internet.Starting Price: $12 per user per month -
5
webhooks.io
webhooks.io
Webhooks.io is a webhook proxy and provider platform built to make webhooks reliable, scalable, and flexible for end users and application providers. It lets teams proxy all webhook traffic through one dependable service in less than five minutes, immediately gaining insight and dependability for requests. For webhook consumers, its Proxy Relay Service provides a reliable way to route webhook traffic with features such as data transformations, filtering, multiple destination endpoints, custom retry policies, request logs, full payload details, and delivery analytics. Users can subscribe to one webhook and send it to one or more destinations, define linear or exponential backoff policies per destination, and build recipes that make HTTP requests, filter based on payload data, trim payloads, or modify data before delivery. For SaaS providers, Webhooks.io offers a provider platform and client libraries that add a robust webhook engine to an application.Starting Price: $9 per month -
6
HookWatch
HookWatch
HookWatch is an automated monitoring platform designed to track webhooks, cron jobs, and AI agent tool calls from a single dashboard. It provides real-time visibility into events, success rates, failures, and latency metrics to prevent silent infrastructure issues. Developers can inspect full payloads, debug delivery errors, and replay missed webhook events with one click. The platform includes cron monitoring with human-readable schedules, execution logs, and automatic retry mechanisms. Its MCP Proxy feature enables full request and response logging for AI agent tool calls without requiring code changes. HookWatch offers smart alerts through email, Slack, Discord, and PagerDuty to keep teams informed. Built for indie hackers and small teams, it delivers unified observability with a developer-friendly CLI and cloud-optional setup.Starting Price: $12/month -
7
Convoy
Convoy Webhooks
Convoy is an enterprise-grade webhook gateway for sending and receiving events reliably. It gives developers a complete solution for secure, scalable webhook delivery, helping teams manage incoming and outgoing webhooks with retries, signatures, rate limiting, endpoint controls, observability, and confidence at scale. Built for developers and trusted by enterprises, Convoy acts like an API gateway for webhooks, allowing engineering teams to send, receive, manage, monitor, and troubleshoot millions of events without building fragile webhook infrastructure in-house. It supports advanced endpoint management, subscription filtering by event body and event header, payload search, static IPs, circuit breaking, rolling secrets, OAuth2 endpoint authentication, and multi-tenant organization and project structures. Its Playground makes webhook testing easier by letting teams generate webhook URLs, inspect payloads, and analyze headers in one place.Starting Price: $99 per month -
8
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 -
9
HttpStatus
HttpStatus.com
HttpStatus is an API testing, monitoring, and developer tools platform built for modern development workflows. With over 700 free browser-based tools, it covers everything developers need — from JSON formatting and JWT decoding to SSL certificate checking, CORS debugging, OpenAPI validation, and uptime monitoring. The platform is organized into specialized hubs: JSON, Regex, Cron, Base64, URL, Hash, UUID, YAML, Timestamp, JWT, HTTP, Security, and more. Each hub contains focused tools that run entirely in the browser — no installs, no signups, no data leaving your device. Beyond individual tools, HttpStatus offers full-featured capabilities for API development teams: mock servers for frontend development, chaos engineering for resilience testing, automation workflows with Postman collection import, webhook capture and inspection, distributed tracing analysis, and multi-region uptime monitoring with alert channels and public status pages.Starting Price: $0 -
10
Svix
Svix
Webhooks require a lot more engineering time, resources and ongoing maintenance than you would first expect. Building a secure, reliable, and scalable webhook service is hard and time consuming. We built it so you can focus on what matters most, your business. Customer endpoints fail or hang more often than you think. You need automatic retries to ensure deliverability. You need to monitor the deliverability of your webhooks to different endpoints, disable failing ones and notify your customers. Webhooks come with a myriad of security implications, such as SSRF, replay attacks and unauthenticated webhook events. You would need to build a UI for your users to add and remove endpoints, inspect logs and get ongoing reports. Offer your users a great developer experience, including the ability to test, inspect and replay their webhooks.Starting Price: $490/month -
11
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 -
12
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 -
13
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 -
14
WebhookX
WebhookX
WebhookX is an open source webhook gateway for receiving, validating, transforming, and delivering events at scale. It is designed to sit between event sources, internal services, and downstream consumers, giving teams a centralized layer for webhook traffic instead of scattering verification, routing, retries, and delivery logic across many applications. It helps developers handle inbound and outbound webhook flows through one gateway, making it easier to process events securely, route them to the correct services, transform payloads, and keep delivery behavior consistent as systems grow. WebhookX focuses on the parts of webhook infrastructure that are often difficult to maintain in-house, including event validation, request handling, event transformation, delivery management, and scalable processing. Its architecture is built for teams that need webhook workflows to remain reliable under production traffic.Starting Price: $39 per month -
15
APIFuzzer
PyPI
APIFuzzer reads your API description and step-by-step fuzzes the fields to validate if your application can cope with the fuzzed parameters, and it does not require coding. Parse API definition from a local file or remote URL. JSON and YAML file format support. All HTTP methods are supported. Fuzzing of the request body, query string, path parameter, and request header is supported. Relies on random mutations and supports CI integration. Generate JUnit XML test report format. Send a request to an alternative URL. Support HTTP basic auth from the configuration. Save the report of the failed test in JSON format into the pre-configured folder.Starting Price: Free -
16
Hook0
Hook0
Hook0 is an open source Webhooks-as-a-Service platform that helps developers send, receive, manage, and monitor webhooks at scale. It is built for teams that need to add webhook support to their product without spending weeks building retry logic, signatures, monitoring, queues, dead letter handling, event logs, and subscriber management from scratch. With one API call, teams can publish outbound events, while Hook0 handles delivery infrastructure, configurable retry logic, webhook calls, endpoint monitoring, event persistence, and developer tooling. It keeps track of every event an application sends and every webhook call it makes, helping teams debug integrations, inspect delivery attempts, and maintain an audit log. Hook0 supports secure webhook delivery with HMAC signatures, key rotation, TLS encryption, and compliance-focused deployment options. As a fully open source platform, it allows teams to audit the codebase and self-host on their own infrastructure.Starting Price: €59 per month -
17
Hookdeck
Hookdeck
Receive webhooks reliably, even after server outages. Free features like automatic retries and rate limiting keep your system humming – while developer-friendly tooling and an intuitive dashboard keep the whole team happy. Hookdeck's main features include: - Filter out the Noise: Disregard events based on their contents and receive only the requests you care about. - Transform your Data: Take charge of your payloads by trimming, formatting, converting, or appending data. - Stay Alert: Customize your notification rules to keep you a step ahead of any issues.Starting Price: $39/month -
18
Runscope
Runscope
An API Monitoring (Runscope) API test is a group of one or more HTTP requests executed sequentially to evaluate the uptime, performance and correctness of an API. For each step in the test, you can define Assertions to validate response data and Variables to extract data to be used in subsequent requests. A test Passes if all the assertions pass. A test Fails if any assertion fails, or another error is encountered, such as a network connection problem. Your customers shouldn’t be the ones telling you about downtime and breakages. Runscope supports the notification tools you already use, like PagerDuty, Slack, HipChat, email, webhooks and more. Proactively monitor service performance to quickly catch and debug API problems fast. Stay ahead of intermittent failures before they become major issues with the API Dashboard and daily API Performance Report. Verify that the structure and content of your API calls meets your expectations. Powerful and flexible assertions give you total control. -
19
PostPilot
PostPilot.dev
🚀 PostPilot – Your Private Workspace for APIs, Databases & Data Inspection PostPilot combines an API client, database client, and data inspector into one streamlined, local-first interface. Use Variables to link requests and organize everything in reusable Collections — fully local, fully private. ⚙️ How PostPilot Streamlines Your Development Workflow PostPilot combines three core tasks into one lightweight, local app: - API Testing: Send REST/GraphQL requests, inspect responses, and extract data. - Database Querying: Connect to your local or remote DBs and run SQL queries. - Data Inspection: Load JSON/XML, run queries, and debug data fast. All with: - Connection via Variables: Easily reuse variables across requests, queries, and scripts. - Manage requests in Collections: Save and reuse requests anytime - Private Workspace: Your data stays local. No cloud sync, no tracking.Starting Price: $40 one-time-payment -
20
Requestly
RQ Labs, Inc.
Requestly API Client offers a range of tools to help you design, manage, and test APIs effectively. With distinct combination of features Requestly acts as a companion to developers and QAs. 1. Design APIs: Requestly simplifies API Design by allowing you to create individual API requests, specify HTTP methods, headers, query parameters, and request bodies. 2. Send API Requests: Sending API Requests is at the core of API testing. Responses can be viewed in detail, including status codes, headers, and payloads. 3. API Collections: Collections allow you to group related API requests for better organization and collaboration. 4. Variables: Requestly simplify API testing and management by allowing you to replace hardcoded values with placeholders - Collection, Environment, and Global Variables. 5. Scripts (Pre & Post): Scripts allow you to add logic or modify requests before they are sent, or process responses and manipulate variables that can be used in subsequent API call.Starting Price: $0 -
21
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. -
22
Yaak
Yaak
Yaak is a fast, lightweight, and privacy-focused desktop API client designed for developers to test, debug, and interact with APIs in a clean and efficient environment without relying on cloud services. It works entirely offline, storing all data locally on the user’s machine with encrypted secrets and zero telemetry, ensuring full control over sensitive information and eliminating the need for accounts or external servers. It supports a wide range of protocols, including REST, GraphQL, gRPC, WebSockets, and Server-Sent Events, allowing developers to work with different types of APIs in a single interface. It includes features such as dynamic request templating with variables and functions, request chaining, and full debugging tools for inspecting headers, cookies, payloads, and responses. Yaak also integrates with Git by storing workspaces as plain files, enabling version control and collaboration while maintaining security through encrypted data handling.Starting Price: $79 per year -
23
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. -
24
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 -
25
SocialHook
SocialHook
SocialHook is a Meta messaging webhook platform built exclusively for developers and technical agencies that need to receive Facebook, Instagram, and WhatsApp Business messages on their own server — without per-message fees, without per-conversation billing, and without being locked into a chatbot builder they do not control. It is not a no-code chatbot platform. It is not a shared inbox tool for support teams. It is pure webhook infrastructure — the layer between Meta's messaging APIs and your server. Every inbound message from any connected platform is normalised into a clean, signed JSON payload and delivered to your endpoint in under 50ms. You build on top. Your AI agent, your CRM sync, your n8n workflow, your Make.com automation — SocialHook fires the payload, you handle the logic.Starting Price: $50/month -
26
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. -
27
requests
Python Software Foundation
Requests is a simple, yet elegant, HTTP library. Requests allows you to send HTTP/1.1 requests extremely easily. There’s no need to manually add query strings to your URLs, or to form-encode your PUT & POST data, but nowadays, just use the JSON method! Requests is one of the most downloaded Python packages today, pulling in around 30M downloads/week, according to GitHub, Requests is currently depended upon by 1,000,000+ repositories. You may certainly put your trust in this code. Requests is available on PyPI. Requests is ready for the demands of building robust and reliable HTTP–speaking applications, for the needs of today. Automatic content decompression and decoding. International domains and URLs. Sessions with cookie persistence. Browser-style TLS/SSL verification. Basic & digest authentication, and familiar dict–like cookies. Multi-part file uploads. SOCKS proxy support. Connection timeouts and streaming downloads.Starting Price: Free -
28
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 -
29
ngrok
ngrok
ngrok is the programmable network edge that adds connectivity, security, and observability to your apps with no code changes. Bring security, scalability, and observability to your apps with ngrok's network edge. Put localhost on the internet securely. Introspect and replay requests for a tight feedback loop. Connect into customer networks. No time wasted on firewall rules, VPNs, or change requests. ngrok is the fastest way to put your app on the internet. We run a globally distributed reverse proxy fronting your web services running in any cloud or behind any firewall.Starting Price: $18 per month -
30
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. -
31
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 -
32
Undo
Undo
Empowering developers to understand their codebase and fix bugs faster with time travel debugging. UDB is the leading time travel debugger for Linux C/C++ applications. Resolve complex software defects in development or in production up to 10x faster. Debugging software failures takes time. It slows down development and disrupts customers. What if you could record your program's execution as it fails and replay the recording offline (any time, anywhere) to see exactly what happened? LiveRecorder is the leading enterprise-grade Software Failure Replay platform. Time Travel Debugging greatly improves team productivity in development. It is also ideal to debug test failures. Travel forward and backward in time to inspect the program state. Undo enables developers to see through that complexity and create better software faster. With Undo’s time travel debugging, developers no longer need to waste time figuring out what the code is doing. -
33
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 -
34
Google Places API
Google
The Places API is a service that returns information about places using HTTP requests. Places are defined within this API as establishments, geographic locations, or prominent points of interest. The following place requests are available: Place Search returns a list of places based on a user's location or search string. Place Details returns more detailed information about a specific place, including user reviews. Place Photos provides access to the millions of place-related photos stored in Google's Place database. Place Autocomplete automatically fills in the name and/or address of a place as users type. Query Autocomplete provides a query prediction service for text-based geographic searches, returning suggested queries as users type. Each of the services is accessed as an HTTP request, and returns either an JSON or XML response. -
35
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 -
36
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. -
37
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 -
38
HELO
Beyond Code
HELO is a desktop application designed to simplify email testing and debugging for web developers by capturing and analyzing outgoing emails generated by applications during development. Instead of sending emails to real recipients, HELO exposes a local SMTP server that intercepts outgoing messages and displays them inside the application, allowing developers to inspect and verify them before deployment. This approach helps prevent common problems such as broken links, missing images, formatting errors, and other issues that often appear in production emails. It provides detailed debug views that show the email in multiple formats, including HTML rendering, plain text, raw source code, and full message headers, giving developers a complete understanding of how the message is structured. Automated validation tools check links within the email to confirm they return valid HTTP responses, reducing the risk of sending emails with invalid or broken URLs.Starting Price: $49 per month -
39
Echo
Echo
High-performance, extensible, minimalist Go web framework. Highly optimized HTTP router with zero dynamic memory allocation which smartly prioritizes routes. Build robust and scalable RESTful API, easily organized into groups. Automatically install TLS certificates from Let's Encrypt. HTTP/2 support improves speed and provides a better user experience. Many built-in middleware to use, or define your own. Middleware can be set at root, group, or route level. Data binding for HTTP request payload, including JSON, XML or form data. API to send a variety of HTTP responses, including JSON, XML, HTML, file, attachment, inline, stream, or blob. Template rendering using any template engine. Customized central HTTP error handling. Easily extendable API. Optimized HTTP router which smartly prioritizes routes. Build robust and scalable RESTful APIs. Extensible middleware framework. Define middleware at root, group, or route level Data binding for JSON, XML, and form payload.Starting Price: Free -
40
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. -
41
Insomnia
Kong
Design, debug, and test APIs like a human, not a robot. Finally, a workflow you'll love. The Collaborative API Design Tool for designing, testing and managing OpenAPI specifications. The Desktop API client for REST and GraphQL. Make requests, inspect responses. Quickly create and group requests, specify environment variables, authentication, generate code snippets, and more. Get all the details on responses. View the whole request timeline, status codes, body, headers, cookies, and more. Create workspaces, folders, environments, drag-and-drop requests, and easily import and export your data. Create, edit, lint, debug, preview, and manage all of your OpenAPI specs in one collaborative API design editor. Generate configuration for common API gateways such as the Kong API Gateway, and Kong for Kubernetes. Sync your API designs with source control such as Github / Gitlab, and deploy directly to API Gateways such as Kong with one click.Starting Price: $5 per month -
42
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 -
43
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 -
44
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 -
45
Meticulous
Meticulous
Meticulous is an AI-powered frontend testing platform that automatically generates and maintains visual end-to-end browser tests, eliminating the need for manual test creation and upkeep. By integrating a simple JavaScript snippet into development, staging, or preview environments, Meticulous records user interactions, capturing clicks, scrolls, and other events. These sessions are analyzed to build a comprehensive test suite that evolves alongside your application, ensuring coverage of every user flow and edge case. When a pull request is opened, Meticulous replays selected sessions on both the base and head commits, capturing visual snapshots after each event. These snapshots are compared to detect behavioral, logical, and visual changes, with results posted directly on the pull request for easy review. To ensure test reliability, Meticulous mocks backend responses, preventing side effects and eliminating the need for special test data setups. -
46
Larm
Larm
Larm is an uptime monitoring platform that checks websites, APIs, and services from multiple global locations and only alerts you when multiple probes confirm a problem. This multi-location verification eliminates the false positives that plague most monitoring tools. Larm supports HTTP, TCP, DNS, SSL certificate, and heartbeat/cron monitoring. Every HTTP check captures a full request waterfall (DNS, TCP, TLS, TTFB, transfer), giving you the data you need to debug performance issues, not just know something is down. Status pages are included on every tier, including the free plan. Pages are rendered as static HTML and served from a CDN, so they stay up even when your infrastructure doesn't. Custom domains, email subscribers, automated incident updates, and component grouping are supported on paid plans. Alerts can be sent through 13+ channels.Starting Price: $19/month -
47
n8n
n8n
Build complex automations 10x faster, without fighting APIs. Your days spent slogging through a spaghetti of scripts are over. Use JavaScript when you need flexibility and UI for everything else. n8n allows you to build flexible workflows focused on deep data integration. And with sharable templates and a user-friendly UI, the less technical people on your team can collaborate on them too. Unlike other tools, complexity is not a limitation. So you can build whatever you want — without stressing over budget. Connect APIs with no code to automate basic tasks. Or write vanilla Javascript when you need to manipulate complex data. You can implement multiple triggers. Branch and merge your workflows. And even pause flows to wait for external events. Interface easily with any API or service with custom HTTP requests. Avoid breaking live workflows by separating dev and prod environments with unique sets of auth data.Starting Price: $20 per month -
48
Caido
Caido Labs Inc.
Caido is a modern web security toolkit designed for pentesters, bug bounty hunters, and security teams who need an efficient and customizable solution for web application testing. Caido features a powerful intercept proxy for capturing and manipulating HTTP requests, replay functionality for testing endpoints, and automation tools for handling large-scale workflows. Its sitemap visualization provides a clear view of web application structures, helping users map and navigate complex targets. With HTTPQL, users can efficiently filter and analyze traffic, while no-code workflows and a plugin system enable easy customization to fit specific testing needs. Built on a flexible client/server architecture, Caido supports local or remote hosting, allowing seamless access from anywhere. Its project management system simplifies switching between targets and eliminates the need for manual file handling, keeping workflows organized.Starting Price: Free -
49
Bottle
Bottle
Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library. Requests to function-call mapping with support for clean and dynamic URLs. Fast and pythonic built-in template engine and support for mako, jinja2 and cheetah templates. Convenient access to form data, file uploads, cookies, headers and other HTTP-related metadata. Built-in HTTP development server and support for paste, bjoern, gae, cherrypy or any other WSGI capable HTTP server. -
50
PredictLeads
PredictLeads
Structured company intelligence data powering your business via APIs, Flat Files and Webhooks. Company signals help you identify growing companies, understand target prospects and improve outreach personalization. Using filters like job openings, investment activities, companies working with competitors and more to identify growing companies that should be on your radar. The PredictLeads API is used to discover net-new companies or enrich existing company profiles with insights. Use cases range from enriching CRM with account intelligence, lead generation using buying signals and identifying top performing companies for investment purposes. The primary and recommended method for authenticating with PredictLeads is to specify the API key in the HTTP request header using an extended header field. In all the examples, we’ll use the header authentication model.Starting Price: $500 per month