Alternatives to Firefox Developer Tools
Compare Firefox Developer Tools alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Firefox Developer Tools in 2026. Compare features, ratings, user reviews, pricing, and more from Firefox Developer Tools competitors and alternatives in order to make an informed decision for your business.
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1
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 -
2
Chrome DevTools
Google
Chrome DevTools is a set of web developer tools built directly into the Google Chrome browser. DevTools can help you edit pages on-the-fly and diagnose problems quickly, which ultimately helps you build better websites, faster. There are many ways to open DevTools, because different users want quick access to different parts of the DevTools UI. When you want to work with the DOM or CSS, right-click an element on the page and select Inspect to jump into the Elements panel. Or press Command+Option+C (Mac) or Control+Shift+C (Windows, Linux, Chrome OS). When you want to see logged messages or run JavaScript, press Command+Option+J (Mac) or Control+Shift+J (Windows, Linux, Chrome OS) to jump straight into the Console panel. Toggle various overlays and speed up DOM tree navigation with badges. The main uses of the Chrome DevTools Console are logging messages and running JavaScript.Starting Price: Free -
3
Firefox Developer Edition
Mozilla
Welcome to your new favorite browser. Get the latest features, fast performance, and the development tools you need to build for the open web. All the latest developer tools in beta, plus experimental features like the multi-line console editor and WebSocket inspector. A separate profile and path so you can easily run it alongside release or beta Firefox. Preferences tailored for web developers, browser and remote debugging are enabled by default, as are the dark theme and developer toolbar button. Firefox DevTools now grays out CSS declarations that don’t have an effect on the page. When you hover over the info icon, you’ll see a useful message about why the CSS is not being applied, including a hint about how to fix the problem. The new Firefox DevTools are powerful, flexible, and best of all, hackable. This includes a best-in-class JavaScript debugger, which can target multiple browsers and is built in React and Redux. -
4
weinre
Apache Software Foundation
weinre is WEb INspector REmote. Pronounced like the word "winery". Or maybe like the word "weiner". weinre is a debugger for web pages, like FireBug (for Firefox) and web inspector (for WebKit-based browsers), except it's designed to work remotely, and in particular, to allow you to debug web pages on a mobile device such as a phone. weinre was built in an age when there were no remote debuggers available for mobile devices. Since then, some platforms are starting to provide remote debugger capabilities, as part of their platform toolset. weinre reuses the user interface code from the web inspector project at WebKit, so if you've used Safari's web inspector or Chrome's Developer Tools, weinre will be very familiar. In normal usage, you will be running the client application in a browser on your desktop/laptop, and running a target web page on your mobile device. weinre does not make use of any 'native' code in the browser, it's all plain old boring JavaScript. -
5
FoxyProxy
FoxyProxy
FoxyProxy is an advanced browser extension for Chrome, Firefox, and other Chromium-based browsers that replaces and vastly extends native proxy settings by letting users create, manage, and switch among multiple proxy server profiles with fine-grained control; it supports automatic switching based on URL patterns (wildcards or regular expressions), individual browser tabs, Firefox containers, or private windows, as well as manual selection via colored icons. Users can define inclusion/exclusion rules, test patterns with a built-in tester, toggle WebRTC to limit IP leakage, and import/export full configurations or just rules for backup or sharing, with optional synchronization across instances via browser sync. The interface includes keyboard shortcuts, visible color/country flag cues per proxy, advanced logging for debugging, which proxy was used when, and quick-add flows to capture new rules. -
6
Mozilla Firefox
Mozilla
Mozilla Firefox is a free, open-source web browser developed by the Mozilla Foundation, a non-profit organization dedicated to internet health and privacy. Designed to prioritize user privacy and security, Firefox offers features like Total Cookie Protection, which provides outstanding privacy by default. The browser includes tools such as Firefox View, allowing users to see tabs open on other devices and access recent history, and built-in PDF editing capabilities, enabling form edits directly within the browser. Available across various platforms, including Windows, macOS, Linux, Android, and iOS, Firefox ensures a consistent and secure browsing experience. Its commitment to user-centric development and transparency makes it a preferred choice for those seeking a trustworthy alternative to proprietary browsers.Starting Price: Free -
7
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 -
8
Stetho
Meta
Stetho is a sophisticated debug bridge for Android applications. When enabled, developers have access to the Chrome Developer Tools feature natively part of the Chrome desktop browser. Developers can also choose to enable the optional dumpapp tool which offers a powerful command-line interface to application internals. Alternatively, you can include Stetho from Maven Central via Gradle or Maven. Only the main Stetho dependency is strictly required, however you may also wish to use one of the network helpers. The integration with the Chrome DevTools frontend is implemented using a client/server protocol which the Stetho software provides for your application. Network inspection is possible with the full spectrum of Chrome Developer Tools features, including image preview, JSON response helpers, and even exporting traces to the HAR format. SQLite databases can be visualized and interactively explored with full read/write capabilities. -
9
BlueGriffon
Disruptive Innovations
The next-gen Web and EPUB Editor based on the rendering engine of Firefox. BlueGriffon® has a long list of famous ancestors and proudly inherits from all of them: Netscape®, Mozilla® Composer and Nvu. It is powered by Gecko, the same rendering engine you can find at the heart of Firefox®, and is filled with tons of powerful features. BlueGriffon® is used by millions of users around the world, including Universities, Governments and even the European Parliament. It is officially recommended by the French Government as the Web Authoring Tool for the French Administration in its effort to rely on and promote Free Software. BlueGriffon® is used by millions of users around the world, including Universities, Governments and even the European Parliament. It is officially recommended by the French Government as the Web Authoring Tool for the French Administration in its effort to rely on and promote Free Software.Starting Price: $87.75 one-time payment -
10
VuePress
VuePress
Minimal setup with markdown-centered project structure helps you focus on writing. Enjoy the dev experience of Vue + webpack, use Vue components in markdown, and develop custom themes with Vue. VuePress generates pre-rendered static HTML for each page, and runs as an SPA once a page is loaded. A VuePress site is in fact a SPA powered by Vue (opens new window), Vue Router (opens new window)and webpack (opens new window). If you’ve used Vue before, you will notice the familiar development experience when you are writing or developing custom themes (you can even use Vue DevTools to debug your custom theme!). -
11
Defang
Defang
Defang is a developer-centric platform that simplifies the process of developing, deploying, and debugging cloud applications. By leveraging AI-assisted tooling, Defang enables developers to swiftly transition from an idea to a deployed application on their preferred cloud provider. The platform supports multiple programming languages, including Go, JavaScript, and Python, allowing developers to start with sample projects or generate project outlines using natural language prompts. With a single command, Defang builds and deploys applications, handling configurations for computing, storage, load balancing, networking, logging, and security. The Defang Command Line Interface (CLI) facilitates interactions with the platform, offering installation options via shell scripts, Homebrew, Winget, Nix, or direct download. Developers can define services using compose.yaml files, which Defang utilizes to deploy applications to the cloud.Starting Price: $10 per month -
12
Firefox Nightly
Mozilla Foundation
Get a sneak peek at our next-generation web browser, and help us make it the best browser it can be: try Firefox Nightly. Nightly is an unstable testing and development platform. By default, Nightly sends data to Mozilla, and sometimes our partners, to help us handle problems and try ideas. Firefox Nightly gets updated every day and as a consequence, the release notes for the Nightly channel are updated continuously to reflect features that have reached sufficient maturity to benefit from community feedback and bug reports. Allow the browser toolbox to enable/disable multiprocess behavior on-demand (bug). The user can switch between two modes. The devtools console is now significantly faster! If you are a developer who heavily uses the console, this should be a substantial quality of life improvement. Firefox 100 goes out today! A milestone release, but also business as usual! Congratulations to contributors who helped get Firefox 100 out the door!Starting Price: Free -
13
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 -
14
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 environmentsStarting Price: $90 per month -
15
Inferno
Inferno
Inferno doesn't have a fully synthetic event system like React does. Inferno has a partially synthetic event system, instead opting to only delegate certain events (such as `onClick`). Inferno provides lifecycle events on functional components. This is a major win for people who prefer lightweight components rather than ES2015 classes. Inferno is able to use the React Dev Tools extensions for Chrome/Firefox/etc to provide the same level of debugging experience to the Inferno user via inferno-devtools. Inferno has a partial synthetic event system, resulting in better performance via delegation of certain events. Inferno provides lifecycle events on functional components. This is a major win for people who prefer lightweight components rather than ES2015 classes.Starting Price: Free -
16
Arm DDT
Arm
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. -
17
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. -
18
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.Starting Price: Free -
19
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 -
20
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 -
21
BFuzz
RootUp
BFuzz is an input-based fuzzer tool that takes HTML as an input, opens up your browser with a new instance, and passes multiple test cases generated by domato which is present in the recurve folder of BFuzz, more over BFuzz is an automation that performs the same task repeatedly and it doesn't mangle any test cases. Running BFuzz will ask for the option of whether to fuzz Chrome or Firefox, however, this will open Firefox from recurve and create the logs on the terminal. BFuzz is a small script that enables you to open the browser and run test cases. The test cases in recurve are generated by the domato generator and contain the main script. It contains additional helper code for DOM fuzzing.Starting Price: Free -
22
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 -
23
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. -
24
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 -
25
BMC Compuware Xpediter
BMC Software
BMC Compuware Xpediter is a family of debuggers and interactive analysis tools for COBOL, Assembler, PL/I, and C programs that helps developers quickly understand applications, make changes, and fix problems in a secure environment—even if they’re unfamiliar with the source code. Xpediter enables developers to get into an interactive test session with minimal effort and quickly move applications into production with greater confidence. See line-by-line code execution and control all aspects of program execution and data. Use Code Coverage to see proof of execution and view metrics on multi-platform applications. Access Abend-AID diagnostic capabilities from within a debugging session. See a graphical view of source code through an integration with Topaz for Program Analysis. Leverage Topaz for Total Test for building a comprehensive portfolio of automated virtualized test cases. Intercept and debug mainframe transactions initiated remotely. -
26
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 -
27
MS4BI
Mandragore Planete
MS4BI Server PROFESSIONAL: Free System BI Welcome to agile BI projects and small businesses! Ultra light, ultra simple, fully responsive. -Multiplatform : Windows, local & Web Server & Cloud -Charts, queries, dashboards, report design, groups, aggregates, menus,Excel consolidation, web application : budget,timeline,gantt,bank,personal... - Design Tools: Web apps, no coding required. - SQL, ADO, ODBC Oracle. MySQL, SQL Server, SQLite3. - Administration database, encryption. - Language: Ms4Script (lowcode). Unique optimized source code for shorter development times: Pchart, Nice, Morris, ChartJS, Google Charts, Excel, Leaflet and others. - license by subscriptio/year - cloud : free account - Free Version MS4BI integrates with: PHP, HTML, JavaScript, jQuery, Microsoft Edge, Mozilla Firefox, Chrome, SafariStarting Price: €149 for license Year -
28
Sencha Ext JS
Sencha
Sencha Ext JS is a comprehensive JavaScript application framework for building feature-rich, cross-browser-compatible web and mobile applications. It includes a library with 140+ high-performance customizable components, a set of tools and a powerful UI Framework. Key Features Rich UI Components – Includes a variety of pre-built UI elements such as grids and trees, menus and toolbars, forms and buttons, etc. Cross-platform compatibility - Supports major desktop and mobile web browsers including IE Firefox Chrome Safari and Opera. Data Packages – Includes data components to interact with various data sources including JSON, XML and database connections. Theming and Skinning - Allow easy skinning and theming of the UI with CSS. Development Tools - Includes an extensive set of development tools including a visual designer and debugger. Large Community - Has an active and large community of developers who provide support, extensions, etc.Starting Price: $1,295 one-time payment -
29
Firefox Focus
Mozilla
This page describes some new features in Firefox Focus. If your Firefox Focus looks different, don't fret, you'll be able to get the new version soon. Take private browsing to the next level. Firefox Focus gives you a dedicated privacy browser with tracking protection and content blocking. You can use Firefox Focus as a standalone browser or as content blocker for Safari on supported iPhone, iPad and iPod touch devices. Use Firefox Focus as a browser dedicated to your privacy and security. Easily erase your browsing history, passwords, bookmarks and cookies and prevent unwanted ads from following you. Whenever you want a private tracker-free experience, fire up Firefox Focus. Firefox Focus is easy to use. Just enter your search or website address in the field. To view a page in regular Firefox or to share it using another app, tap the share button at the bottom of the screen.Starting Price: Free -
30
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 -
31
Comodo IceDragon
Comodo Security Solutions
IceDragon features privacy and performance enhancements over the Firefox core browser as well as additional features such as SiteInspector malware scanning, Comodo Secure DNS and improved social media functionality. Fast, easy to use and light on PC resources. Scan web-pages for malware right from the browser. Lightning fast page loads with integrated DNS service. Privacy and performance enhancements over Firefox core. Full compatibility with Firefox plug-ins. Comodo IceDragon is a fast and versatile Internet browser based on Mozilla Firefox which features several security, performance and feature enhancements over the core build. Fully compatible with Firefox plug-ins and extensions, IceDragon combines the freedom and functionality of Firefox with the unparalleled security and privacy of Comodo. Comodo IceDragon is a fast and versatile internet browser based on Mozilla Firefox which features several security, performance and feature enhancements over the core build. -
32
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 -
33
Summernote
Summernote
Super simple WYSIWYG editor on Bootstrap. Easy to install, simply download and attach your js, css with bootstrap. Customize by Initializing various options and modules. See all useful features of summernote in action. Summernote is licensed under MIT and maintained by the community. Integrate it with any back-end. 3rd parties available in django, rails, angular. Supports Bootstrap 3.x.x to 4.x.x, it is very lightweight (js+css: 100Kb), provides smart user interaction, works in all major browsers, like Safari, Chrome, Firefox, Opera, Edge and Internet Explorer 9+. It also works in all major operating systems, such as Windows, MacOS, Linux. The fastest way to get Summernote is to download the precompiled and minified versions of our CSS and JavaScript. Bootstrap uses certain HTML elements and CSS properties which require HTML5 doctype. -
34
ColdFusion Builder
Adobe
Build with a lightweight, quick-loading IDE that complements Adobe ColdFusion. Finish faster with tools that help you to develop, test, debug and deploy applications. Automatically detect vulnerabilities in your code. Identify bottlenecks with reports from the Performance Monitoring Toolset. Ride the wave, easily develop, test, debug and deploy mobile and browser-based applications, and get a head start in the fast-growing apps market. Keep it safe, use debugging, refactoring, preview and other smart features for identifying security vulnerabilities, and maintain the integrity of your code. Streamline your work, use extensions, remote project support, integrated server management, a log viewer, and more, and take charge of your environment. Accelerate your application development with intelligent, ordered code assist for CFML, CFScript, HTML, JavaScript and CSS. Get code assist even for third-party JavaScript libraries included in your web application.Starting Price: $299 one-time payment -
35
Orbit Profiler
Orbit Profiler
Quickly find performance bottlenecks and visualize what is going on in a complex C/C++ application. Orbit is a standalone profiler and debugging tool for Windows and Linux. Its main purpose is to help developers understand and visualize the execution flow of a complex application. By giving a bird’s eye view of what is happening under the hood, Orbit gives the developer a deeper understanding of complex systems and allows them to quickly find performance bottlenecks. Orbit works out of the box on any C/C++ application, as long as it has access to the Pdb file. Start profiling as soon as you finish downloading Orbit. Orbit injects itself into the target process and hooks into selected functions. It works even on your highly optimized final/shipping builds. Sampling is great when you don’t know where to start looking. Orbit’s sampling is fast, robust, and “always on”. Orbit combines sampling and dynamic instrumentation to optimize the profiling workflow. -
36
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. -
37
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. -
38
Pencil Project
Evolus
Pencil is an open source user interface drafting tool that Evolus builds on Mozilla 's technologies . This tool helps analysts and application interface developers to quickly draw application interfaces to document communication with customers in the process of collecting requirements or as a basis for the team. application development. The Pencil tool building project is one of Evolus' efforts to give back to the community. It is for that reason that Pencil has been released as an open source tool (GPL license) so that anyone can have the opportunity to use and access its source code to adjust and upgrade. . Pencil can be deployed as an add-on to the Mozilla Firefox 3 browser or as a standalone application. Pencil is a cross-platform application and can work well on any platform that Mozilla Firefox 3 supports. -
39
Latta
Latta
Latta AI is an innovative platform designed to streamline the software development process by automating the detection and resolution of bugs. By recording user sessions and applying AI-driven fixes, Latta AI enables developers, project managers, and testers to focus more on feature development, thereby boosting productivity and accelerating release cycles. The platform integrates seamlessly with popular version control systems like GitHub and GitLab and maintains strict security protocols to ensure code privacy and protection. Additionally, Latta AI offers a plugin for JetBrains IDEs, allowing developers to access its bug-fixing tools directly within their development environment. This integration facilitates quick identification and resolution of issues without the need to leave the IDE. Overall, Latta AI aims to reduce the time developers spend on debugging by up to 40%, enhancing efficiency and allowing teams to focus on innovation.Starting Price: $0.05 per fix -
40
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. -
41
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 -
42
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 -
43
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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44
Basilisk
Basilisk
A XUL-based web browser demonstrating the Unified XUL Platform (UXP). This browser is a close twin to pre-Servo Firefox in how it operates. Basilisk is a free and Open Source XUL-based web browser, featuring the well-known Firefox-style interface and operation. It is based on the Goanna layout and rendering engine (a fork of Gecko) and builds on the Unified XUL Platform (UXP), which in turn is a fork of the Mozilla code base without Servo or Rust. Basilisk is primarily a reference application for the development of the XUL platform it builds upon, and additionally a potential replacement for Firefox. Basilisk is development software. This means that it should be considered more or less "beta" at all times; it may have some bugs and is provided as-is, with potential defects. Like any other free software community project, it comes without any warranty or promise of fitness for any particular purpose.Starting Price: Free -
45
HtmlUnit
HtmlUnit
HtmlUnit is a "GUI-Less browser for Java programs" that models HTML documents and provides an API to interact with web pages, such as invoking pages, filling out forms, and clicking links, similar to a standard web browser. It offers fairly good JavaScript support, which is constantly improving and is capable of handling complex AJAX libraries, simulating browsers like Chrome, Firefox, or Edge depending on the configuration used. Typically used for testing purposes or retrieving information from websites, HtmlUnit is not a generic unit testing framework but is intended to simulate a browser within another testing framework such as JUnit or TestNG. It is utilized as the underlying "browser" by various open source tools like WebDriver, Arquillian Drone, and Serenity BDD, and is employed by many projects for automated web testing, including Apache Shiro, Apache Struts, and Quarkus.Starting Price: Free -
46
Redux
Redux
Redux is a JavaScript library designed for predictable and maintainable global state management in applications. It assists developers in writing applications that behave consistently across different environments, client, server, and native, and are easy to test. By centralizing an application's state and logic, Redux enables powerful capabilities such as undo/redo functionality and state persistence. The Redux DevTools facilitate tracing when, where, why, and how an application's state changes, offering features like time-travel debugging and comprehensive error reporting. Redux is flexible and works with any UI layer, supported by a large ecosystem of add-ons to meet various development needs. The Redux team also provides additional libraries, including React-Redux, the official React bindings for Redux, and Redux Toolkit, an opinionated toolset for efficient Redux development. -
47
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. -
48
SlimerJS
SlimerJS
SlimerJS is a free, open source scriptable browser for web developers, allowing interaction with web pages through external JavaScript scripts. It enables tasks such as opening web pages, clicking links, and modifying content, making it useful for functional tests, page automation, network monitoring, screen capture, and web scraping. Unlike PhantomJS, SlimerJS runs on top of Gecko, the browser engine of Mozilla Firefox, instead of WebKit, and can operate in both headless and non-headless modes. APIs of SlimerJS are similar to the APIs of PhantomJS but there are a few differences in their behavior. However, most of the scripts for PhantomJS run perfectly well with SlimerJS right now.Starting Price: Free -
49
Arm Forge
Arm
Build reliable and optimized code for the right results on multiple Server and HPC architectures, from the latest compilers and C++ standards to Intel, 64-bit Arm, AMD, OpenPOWER, and Nvidia GPU hardware. Arm Forge combines Arm DDT, the leading debugger for time-saving high-performance application debugging, Arm MAP, the trusted performance profiler for invaluable optimization advice across native and Python HPC codes, and Arm Performance Reports for advanced reporting capabilities. Arm DDT and Arm MAP are also available as standalone products. Efficient application development for Linux Server and HPC with Full technical support from Arm experts. Arm DDT is the debugger of choice for developing of C++, C, or Fortran parallel, and threaded applications on CPUs, and GPUs. Its powerful intuitive graphical interface helps you easily detect memory bugs and divergent behavior at all scales, making Arm DDT the number one debugger in research, industry, and academia. -
50
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
