Alternatives to LogDog

Compare LogDog alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to LogDog in 2026. Compare features, ratings, user reviews, pricing, and more from LogDog competitors and alternatives in order to make an informed decision for your business.

  • 1
    Blackbird API Development
    Accelerate Development of Prod-Ready APIs. AI-Powered Code Gen, Mocking in Minutes, and On-Demand Ephemeral Test Environments. * Design Efficiently: Generate standardized OpenAPI specs with AI assistance, allowing you to begin coding faster. * Mock Effortlessly: Create shareable API mocks without manual coding, enabling rapid validation. * Automate Repetitive Tasks: Utilize AI to automatically generate boilerplate code for both client and server-side APIs. * Test Effectively: Access publicly available URLs for testing in a production-like test environment through Blackbird's ephemeral testing environments. * Debug Seamlessly: Set breakpoints and debug directly from your preferred IDE with Blackbird's integrated debugging tools. * Deploy Smoothly: Utilize a 24/7 hosted environment for progressive and repeated testing without reconfiguration, facilitated by Blackbird's containerized deployment.
    Starting Price: $69/month
  • 2
    Telepresence

    Telepresence

    Ambassador Labs

    Telepresence streamlines your local development process, enabling immediate feedback. You can launch your local environment on your laptop, equipped with your preferred tools, while Telepresence seamlessly connects them to the microservices and test databases they rely on. It simplifies and expedites collaborative development, debugging, and testing within Kubernetes environments by establishing a seamless connection between your local machine and shared remote Kubernetes clusters. Why Telepresence: Faster feedback loops: Spend less time building, containerizing, and deploying code. Get immediate feedback on code changes by running your service in the cloud from your local machine. Shift testing left: Create a remote-to-local debugging experience. Catch bugs pre-production without the configuration headache of remote debugging. Deliver better, faster user experience: Get new features and applications into the hands of users faster and more frequently.
    Starting Price: Free
  • 3
    Scout Monitoring

    Scout Monitoring

    Scout Monitoring

    Scout Monitoring is Application Performance Monitoring (APM) that finds what you can't see in charts. Scout APM is application performance monitoring that streamlines troubleshooting by helping developers find and fix performance issues before customers ever see them. With real-time alerting, a developer-centric UI, and tracing logic that ties bottlenecks directly to source code, Scout APM helps you spend less time debugging and more time building a great product. Quickly identify, prioritize, and resolve performance problems – memory bloat, N+1 queries, slow database queries, and more – with an agent that instruments the dependencies you need at a fraction of the overhead. Scout APM is built for developers, by developers, and monitors Ruby, PHP, Python, Node.js, and Elixir applications.
  • 4
    Fiddler

    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
    RequestBin

    RequestBin

    RequestBin

    RequestBin is an HTTP request inspector and webhook testing tool for capturing, inspecting, replaying, and forwarding webhooks. It gives developers temporary request bin URLs that collect incoming HTTP requests so they can analyze what clients, APIs, and third-party services are sending without writing custom debugging code. It is built for real-time HTTP request inspection, webhook debugging, and API integration testing, making it easier to view captured data such as headers, payloads, query strings, JSON, XML, and form data in a human-readable way. RequestBin supports both local and cloud storage options, allowing users to decide how they want captured requests handled during testing and development. Its documentation covers bins, request replay, forwarding rules, mock APIs, API keys, MCP server support, and developer tools for HTTP debugging and API development.
    Starting Price: $12 per month
  • 6
    Shake

    Shake

    Shake

    Reports arrive to you instantly, automatically supplemented with a ton of useful data so you can fix them 50X faster. Whenever users notice a bug, they just shake their phone to report it, without ever leaving your app. When they shake their device, Shake opens up and allows them to send you feedback without ever leaving your app. Report yourself any info from the user’s device you want. Use .setMetadata() to easily adjust the data to your debugging requirements. See the user’s taps around your app, .log() custom events and see all their network traffic prior to reporting the bug to you. On the web Dashboard you can, for example, effortlessly find only bugs reported from iPad Airs that were in landscape mode and offline. Get bug notifications immediately in your team chat. Or, have tasks created directly in your issue tracker of choice. Shake was built to play nicely with the tools your team already uses.
    Starting Price: $50 per month
  • 7
    HTTP Toolkit

    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.
  • 8
    Xcode

    Xcode

    Apple

    Xcode is Apple’s integrated development environment for building, testing, and distributing apps across Apple platforms. It provides powerful tools for coding, debugging, profiling, and simulation in one unified workspace. Predictive code completion and coding intelligence help developers write cleaner, faster code. Xcode supports advanced debugging and performance analysis to identify issues early. Built-in simulators allow developers to prototype apps across Apple devices without physical hardware. Testing frameworks ensure apps meet quality and performance standards. Xcode streamlines the entire app development lifecycle from idea to deployment.
  • 9
    HttpWatch

    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
  • 10
    Z/XDC

    Z/XDC

    ColeSoft

    Z/XDC gives developers interactive, source-level debugging for mainframe programs across any z/OS environment, helping them step through live code, inspect variables in real time, and resolve issues faster than traditional methods. It eliminates blind debugging by providing complete, real-time visibility into program execution and bringing modern debugging capabilities to mainframe development. Developers can dramatically reduce debugging time from days to hours, test theories immediately without lengthy recompile cycles, make ad hoc changes, perform “what if” scenarios, fix issues, and verify corrections without recompiling. Z/XDC supports line-by-line code stepping, on-the-fly code changes, flag flipping, data field and register modification, PSW control, module loading and deletion, GETMAINs and FREEMAINs, and Event Control Block posting. It provides source-level visibility so developers can view code as written, automatically load source image maps from ADATA, and more.
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    Mockoon

    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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    BotKube

    BotKube

    BotKube

    BotKube is a messaging bot for monitoring and debugging Kubernetes clusters. It's built and maintained by InfraCloud. BotKube can be integrated with multiple messaging platforms like Slack, Mattermost, Microsoft Teams to help you monitor your Kubernetes cluster(s), debug critical deployments and gives recommendations for standard practices by running checks on the Kubernetes resources. BotKube watches Kubernetes resources and sends a notification to the channel if any event occurs for example ImagePullBackOff error. You can customize the objects and level of events you want to get from the Kubernetes cluster. You can turn on/off notifications. BotKube can execute kubectl commands on the Kubernetes cluster without giving access to Kubeconfig or underlying infrastructure. With BotKube you can debug your deployment, services or anything about your cluster right from your messaging window.
  • 13
    WireMock

    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.
  • 14
    FetchSandbox

    FetchSandbox

    FetchSandbox

    FetchSandbox helps you test the integrations your AI wrote without touching production. From API request to production-ready integration, it lets developers build, test, and validate API integrations in realistic environments before deployment, catching failures early, reducing debugging time, and shipping with confidence. Instead of relying on static mocks, fake success responses, or risky production keys, FetchSandbox gives teams runnable API environments that behave like real services. Its stateful API sandbox keeps state across requests, enforces lifecycle transitions, fires real webhook events, and supports multi-step flows where integrations usually break. Developers can use the MCP Server, CLI, web app, OpenAPI import, and monitoring tools to prove an integration against APIs such as Stripe, Resend, Clerk, GitHub, Paddle, and Shopify.
    Starting Price: $5 per month
  • 15
    Seagence

    Seagence

    Seagence Technologies

    Using Seagence’s unique execution path technology combined with machine learning, receive realtime alerts with root cause when defects occur in your production Java applications. Fix your code without needing any debugging. Attach a lightweight runtime java agent when you start your application. As your users access the application, Seagence agent collects data about how requests are being processed. So give Seagence 24 hours to collect enough sample for analysis. The collected data is fed to Seagence's analytics engine in realtime which finds defects when they occur and alerts. Know that Seagence unearths all defects in your application including unknown. With Seagence provided defect and root cause in hand, you fix your broken code. Continuously monitoring your production application, Seagence proactively finds defects and their root cause in realtime thus eliminating the need for debugging.
    Starting Price: $52 per month
  • 16
    Thundra

    Thundra

    Thundra

    Thundra is a developer platform company that empowers application teams to develop, debug, test, and monitor modern microservices on the cloud. By offering everything from automated instrumentation to cloud debugging and test optimization in a single platform, Thundra eliminates the need for multiple tools for pre-production and production environments
    Starting Price: $90 per month
  • 17
    DebuggAI

    DebuggAI

    DebuggAI

    DebuggAI is an AI-powered debugging platform designed to streamline the process of identifying and resolving code issues through intelligent automation. It offers features such as text-based test requests, secure local tunneling for testing on localhost servers, and visual test reports with GIF recordings to enhance the debugging experience. The platform supports various technologies, including Node.js, Next.js, React, TypeScript, JavaScript, Python, Django, and Vite, making it versatile for different development environments. DebuggAI aims to reduce the complexity of end-to-end testing by allowing developers to generate and run tests using simple English commands, thereby improving efficiency and confidence in the development workflow.
    Starting Price: $20 per month
  • 18
    Lightrun

    Lightrun

    Lightrun

    Add logs, metrics and traces to production and staging, directly from your IDE or CLI, in real-time and on-demand. Boost productivity and gain 100% code-level observability with Lightrun. Insert logs and metrics in real-time even while the service is running. Debug monolith microservices, Kubernetes, Docker Swarm, ECS, Big Data workers, serverless, and more. Quickly add a missing logline, instrument a metric, or place a snapshot to be taken on demand. No need to replicate the production environment or re-deploy. Once the instrumentation is invoked, the data is printed to the log analysis tool, your IDE, or to an APM of your choice. Analyze code behavior to find bottlenecks and errors without stopping the running process. Easily add large amounts of logs, snapshots, counters, timers, function durations, and more. You won’t stop or break the system. Spend less time debugging and more time coding. No more restarting, redeploying and reproducing when debugging.
  • 19
    Bugsee

    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
  • 20
    Google Cloud Debugger
    Real-time application debugging: Cloud Debugger is a feature of Google Cloud that lets you inspect the state of a running application in real time, without stopping or slowing it down. Your users are not impacted while you capture the call stack and variables at any location in your source code. You can use it to understand the behavior of your code in production, as well as analyze its state to find those hard-to-find bugs.
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    HttpMaster
    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
  • 22
    Antithesis

    Antithesis

    Antithesis

    Current approaches to software testing are outdated, inefficient, and costly, leading to reliability problems and wasted engineering effort. Antithesis is a completely new approach to testing and debugging. Your team will spend less time testing and more time building your software. Our platform continuously searches your software for problems, within a simulated environment where every problem can be perfectly reproduced, enabling efficient debugging of the most complex issues. Antithesis is a cloud platform that continuously tests the reliability of software systems. As your developers write code, they push their software (as container images) to Antithesis. We run your software under a variety of conditions and report any unintended behavior. We test your system against a multitude of predefined properties and also offer an SDK for defining additional test properties specific to your system.
    Starting Price: $2 per hour
  • 23
    Bitdive

    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
  • 24
    Disbug

    Disbug

    Disbug

    Dev teams use Disbug chrome extension to capture bugs with screen recording, screenshots, console logs, network logs, user events and upload them to the project management tool, with a single click! Explain and narrate the problem visually. Let developers see exactly what happened when it went wrong. One-click capture of the entire context for bug reports. Instantly know what went wrong from every angle by capturing the complete session. Get consolidated technical logs directly in your favorite tools and with a link to see the detailed logs. Centralize everything in your issue trackers. Seamless integration with the tools of your choice. Automatically create tickets in the pre-configured issue tracker when you report the bug. Expedites the debugging process. Gives you more clarity and makes development easy. Cut down your bug reporting time by 60%. Streamline the work of QA testers, developers & project managers at costs less than a cup of coffee!
    Starting Price: $33 per month
  • 25
    DebugBear

    DebugBear

    DebugBear

    DebugBear is a web performance monitoring tools that helps companies keep their website fast and pass Google's Core Web Vitals assessment. Find out how to optimize your website and get alerted when there's a problem. Run scheduled synthetic tests, monitor data from Google's Chrome User Experience Report (CrUX), and collect real user analytics directly on your website. Track Google Lighthouse scores over time and benchmark against your competition. Get custom performance recommendations with detailed analysis, and quickly try out performance optimizations with page speed experiments – without deploying any code!
    Starting Price: $125/mo
  • 26
    OpenText Functional Testing Lab for Mobile and Web
    OpenText Functional Testing Lab for Mobile and Web provides a centralized digital lab offering remote access to real mobile devices, browsers, and emulators for comprehensive application testing. It enables developers and testers to develop, debug, test, monitor, and optimize mobile and web apps from anywhere, improving productivity and flexibility. The platform supports scalable testing on privately dedicated or public devices, allowing teams to increase coverage without additional hardware investments. Cloud browser testing eliminates the need for managing physical machines and infrastructure. AI-driven features optimize testing workflows for faster, more reliable results. Integration with tools like Appium and Selenium supports a seamless end-to-end testing experience.
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    Webhook.site

    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
  • 28
    FlowLens

    FlowLens

    Magentic AI

    FlowLens is an AI-native debugging and session-recording tool that captures everything needed for correct, context-aware bug diagnosis and lets AI coding agents fix bugs autonomously. With a simple browser extension and optional MCP server, FlowLens records full user sessions, including video of the UI, network-request data, console logs, user interactions (clicks, inputs, navigation), storage state (cookies, local/session storage), system info, and more, all synchronized on a unified timeline. Once a bug is reproduced, FlowLens bundles that complete context into a single “flow” that can be shared via link. AI coding agents compatible with MCP (such as those from major providers) can then load the flow, inspect network activity, error logs, UI state, and user inputs, and automatically analyze root causes and suggest or even generate code fixes. This removes the need for manual replays, copying and pasting logs, or writing verbose bug descriptions.
    Starting Price: $11 per month
  • 29
    SourceDebug

    SourceDebug

    SourceDebug

    SourceDebug is a fast powerful project-oriented programming editor, code browser, and debugger that helps you understand code while you work and plan. SourceDebug has built-in dynamic analysis for C/C++, Objective-C, and more. SourceDebug can debug application with source code in different locations. SourceDebug integrates editing, browsing, compiling and debugging functions for local and remote projects. It can be used to learn an existing code base quickly, and get up to speed on new projects. SourceDebug parses your whole project and lets you navigate and edit code like a breeze. It can jump easily to variables, functions or include files. Smart Bookmark can record the browsing location and play back when needed. Supports GDB or LLDB-MI debug over SSH, ADB, Telnet , Rlogin and Local Cygwin. GDB server debug is also supported. Show Quickwatch, Watches, Callstack, Variables, Memory, Breakpoint List, Disassemble and Thread List as needed. Sftp, Ftp and Local drives are supported.
    Starting Price: $49/user
  • 30
    Arm DDT
    Arm DDT is the number one server and HPC debugger in research, industry, and academia for software engineers and scientists developing C++, C, Fortran parallel and threaded applications on CPUs, GPUs, Intel, and Arm. Arm DDT is trusted as a powerful tool for the automatic detection of memory bugs and divergent behavior to achieve lightning-fast performance at all scales. Cross-platform for multiple servers and HPC architectures. Native parallel debugging of Python applications. Has market-leading memory debugging. Outstanding C++ debugging support. Complete Fortran debugging support. Has an offline mode for debugging non-interactively. Handles and visualizes huge data sets. Arm DDT is a powerful parallel debugger, available standalone or as part of the Arm Forge debug and profile suite. Its intuitive graphical interface provides automatic detection of memory bugs and divergent behavior at all scales.
  • 31
    Rookout

    Rookout

    Rookout

    Rookout is a live data collection and debugging platform, which allows software engineers to understand and debug any application no matter where it’s running - from monoliths to cloud native applications. Rookout empowers engineers to reduce debugging and logging time by 80%, solving customer issues 5x faster. With the use of Non-Breaking Breakpoints, software engineers get the data they need instantly, without additional coding, restarts, or redeployment of their application required.With Rookout, developers are able to understand any piece of code. Being able to extract the data you need, from any line of code, allows devs to understand their code and makes collaboration and handoffs easier.
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    AWS X-Ray
    AWS X-Ray helps developers analyze and debug production, distributed applications, such as those built using a microservices architecture. With X-Ray, you can understand how your application and its underlying services are performing to identify and troubleshoot the root cause of performance issues and errors. X-Ray provides an end-to-end view of requests as they travel through your application, and shows a map of your application’s underlying components. You can use X-Ray to analyze both applications in development and in production, from simple three-tier applications to complex microservices applications consisting of thousands of services.
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    TotalView

    TotalView

    Perforce

    TotalView debugging software provides the specialized tools you need to quickly debug, analyze, and scale high-performance computing (HPC) applications. This includes highly dynamic, parallel, and multicore applications that run on diverse hardware — from desktops to supercomputers. Improve HPC development efficiency, code quality, and time-to-market with TotalView’s powerful tools for faster fault isolation, improved memory optimization, and dynamic visualization. Simultaneously debug thousands of threads and processes. Purpose-built for multicore and parallel computing, TotalView delivers a set of tools providing unprecedented control over processes and thread execution, along with deep visibility into program states and data.
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    LiveDebugger

    LiveDebugger

    Software Mansion

    LiveDebugger is a development tool that makes Phoenix LiveView debugging simple by helping developers see what is happening inside their applications in real time. It gives teams a clear view of the LiveView and LiveComponent structure, making it easier to understand how components fit together and shape the interface. Developers can explore the component tree at a glance, quickly identify where issues originate, and navigate the hierarchy of a LiveView application without guessing which part of the UI is responsible for a problem. LiveDebugger also lets users inspect assigns for any LiveView or LiveComponent in real time, helping them track state transitions, understand data flow, and see how values change as they interact with the app. Its callback tracing tools make it possible to follow lifecycle callbacks, measure execution time, analyze performance, and filter events so developers can focus only on what matters.
    Starting Price: Free
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    Solidity Debugger Pro

    Solidity Debugger Pro

    Solidity Debugger Pro

    Free & Open source. Cross-platform. Supports all EVM blockchains. Solidity Debugger Pro (sdbg) is a VS Code extension that adds feature-rich debugging capabilities for Solidity projects. It supports all EVM-compatible blockchains, allowing developers to easily debug smart contracts locally or on a forked node. Sdbg brings native debugging support for the popular Hardhat framework.
    Starting Price: Free
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    Telerik JustMock

    Telerik JustMock

    Progress Telerik

    JustMock allows you to easily isolate your testing scenario and lets you focus on the logic you want to verify. It integrates seamlessly with your favorite unit testing framework and makes unit testing and mocking simple and fast. Mock everything like non-virtual methods, sealed classes, static methods and classes, as well as non-public members and types everywhere even members of MsCorLib. The perfect tool for unit testing your .NET code whether you're dealing with complex and hard to maintain legacy code or code written with best practices in mind. From finding what arguments your mock object is called with to why it’s not called or why it’s called repeatedly, the JustMock Debug Window helps you find the answers you are looking for while debugging your unit tests. JustMock allows you to receive critical feedback about the completeness and thoroughness of your unit tests—an absolute must for any organization that strives for high-quality code.
    Starting Price: $399 per developer
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    IDA Pro

    IDA Pro

    Hex-Rays

    IDA Pro as a disassembler is capable of creating maps of their execution to show the binary instructions that are actually executed by the processor in a symbolic representation (assembly language). Advanced techniques have been implemented into IDA Pro so that it can generate assembly language source code from machine-executable code and make this complex code more human-readable. The debugging feature augmented IDA with the dynamic analysis. It supports multiple debugging targets and can handle remote applications. Its cross-platform debugging capability enables instant debugging, easy connection to both local and remote processes and support for 64-bit systems and new connection possibilities. IDA Pro allows the human analyst to override its decisions or to provide hints so that the analyst can work seamlessly and quickly with the disassembler and analyze binary code more intuitively.
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    Firefox Developer Tools
    Firefox Developer Tools is a set of web developer tools built into Firefox. You can use them to examine, edit, and debug HTML, CSS, and JavaScript. This section contains detailed guides to all of the tools as well as information on how to debug Firefox for Android, how to extend DevTools, and how to debug the browser as a whole. You can open the Firefox Developer Tools from the menu by selecting Tools > Web Developer > Web Developer Tools or use the keyboard shortcut Ctrl + Shift + I or F12 on Windows and Linux, or Cmd + Opt + I on macOS.
    Starting Price: Free
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    Inspector

    Inspector

    Inspector.dev

    Inspector is a Code Execution Monitoring tool that helps software developers automatically identify errors and bottlenecks. It traces your application at any scale, enabling you to fix issues before customers experience them while keeping debugging costs predictable and low.
    Starting Price: €15/month
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    Spark Inspector

    Spark Inspector

    Spark Inspector

    With a three-dimensional view of your app's interface and the ability to change view properties at runtime, Spark can help you craft the best apps on earth. Wiring your app together with notifications? Spark's notification monitor shows you each NSNotification as it's sent, complete with a stack trace, a list of recipients and invoked methods, and more. Understand app structure at a glance and debug smarter. Connect your app to the Spark Inspector, and you'll see your app's interface front and center. As you interact with your app, the inspector updates in real-time! We monitor every change to your app's view hierarchy so you can always see what's going on. The view of your app you see in Spark isn't just beautiful, it's completely editable. You can modify almost every property of your views, from their class-level attributes to their CALayer transforms. When you make a modification, Spark invokes a method call within your app to directly modify that property.
    Starting Price: $49.99 one-time payment
  • 41
    Kotzilla

    Kotzilla

    Kotzilla

    Visualize and resolve thread performance issues, memory leaks, and structural app issues, during development or in production. Koin’s container captures only essential app behavior data, ensuring minimal overhead. Understand and debug the lifecycle of component instances and scopes, their loading times, and execution among different threads. This ensures proper management and resource allocation while identifying and preventing errors such as memory leaks, performance issues, and ANRs. Analyze dependencies to understand relationships between different components. Optimize the dependency injection process, simplifying development and debugging efforts. This proactive analysis ensures reliability and scalability by detecting and addressing potential issues early. Gain granular traceability of components and lifecycles with Kotzilla’s dedicated API. Visualize identified issues and application crashes to get comprehensive insights into your app’s performance and stability.
    Starting Price: $49 per month
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    HttpStatus

    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.
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    Request Metrics

    Request Metrics

    Request Metrics

    Request Metrics makes web performance easy with real-user monitoring and automated Lighthouse testing—helping you boost Core Web Vitals, SEO, and user experience. Track real visitors, not just lab tests, with automatic noise cancellation, actionable insights, and detailed element attribution. Our scheduled Lighthouse tests detect regressions before they hurt rankings, while real-user data keeps you informed on how your site performs in the wild. Filter by page, device, region, or vendor to uncover performance bottlenecks, and get instant alerts when something slows down. With built-in vendor tracking, you’ll know exactly which third-party scripts are hurting your load times. No complicated setup, no code changes—just fast, reliable performance monitoring designed for modern websites. Get started for free today!
    Starting Price: $34 per month
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    Insomnia
    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
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    Shoreline

    Shoreline

    Shoreline.io

    Shoreline is the Cloud Reliability platform — the only platform that lets DevOps engineers build automations in an afternoon, and fix issues forever. Shoreline reduces on-call complexity by running across clouds, Kubernetes clusters, and VMs allowing operators to manage their entire fleet as if it were a single box. Debugging and repairing issues is easy with advanced tooling for your best SREs, automated runbooks for the broader team, and a platform that makes building automations 30X faster. Shoreline does the heavy lifting, setting up monitors and building repair scripts, so that customers only need to configure them for their environment. Shoreline’s modern “Operations at the Edge” architecture runs efficient agents in the background of all monitored hosts. Agents run as a DaemonSet on Kubernetes or an installed package on VMs (apt, yum). The Shoreline backend is hosted by Shoreline in AWS, or deployed in your AWS virtual private cloud.
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    Sentry

    Sentry

    Sentry

    Sentry is an application monitoring and observability platform that helps developers identify, diagnose, and resolve software issues across web, mobile, backend, and AI-powered applications. Designed with a developer-first approach, the platform combines error monitoring, performance tracing, logs, session replay, profiling, metrics, and uptime monitoring into a unified environment connected by a single trace. Sentry enables engineering teams to quickly move from issue detection to root cause analysis and remediation, providing deep visibility into application behavior and user experiences. Its AI-powered debugging capabilities help developers identify underlying causes, generate fixes, and prevent regressions before code reaches production.
    Starting Price: $29/month
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    Meticulous

    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.
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    Yaak

    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
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    Jam

    Jam

    Jam

    If you’ve taken a screenshot or screen recording, you already know how to Jam. Jam auto-magically creates bug reports with all the info engineers need. Jam creates better bug reports in whatever tool you use. Share links to your bug reports or send them directly to your favorite issue tracker. Your teammates benefit whether they’ve signed up or not. Jam captures everything an engineer needs to debug. We've cut out the need for all those follow-up calls to share more context. Everything they need is right there. Perfect bug reports, every time. No more back and forth. Integrates tightly with your favorite issue trackers & tools. As easy as taking a screenshot. Trusted by thousands of teams at companies. Report bugs in seconds, without disrupting your workflow. Jam currently supports developers during the code review and testing cycles by capturing bug diagnostic data and instantly replaying the bug to seamlessly identify what needs to be fixed.
    Starting Price: $10 per month
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    Deleaker

    Deleaker

    Softanics

    Deleaker 🛠️ is a powerful memory leak detection tool for C++, .NET, and Delphi developers. It seamlessly integrates with Visual Studio, RAD Studio, and works as a standalone app. Deleaker helps identify and fix memory leaks, GDI leaks, and handle leaks 🔍 in real time. With an intuitive UI, detailed reports, and precise stack traces, it makes debugging easier ⚡. Whether you're working on a large project or a small app, Deleaker ensures your software stays efficient and leak-free 🚀.
    Starting Price: $149