Best Free Developer Tools
Ranked by community votes · Free only
#1
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PostgreSQL
Open-source relational database system
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#1 Ranked
Ota
Execution Governance for Humans and AI Agents
7.8
3 ratings
3
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Visual Studio Code
Visual Studio Code is a free, open source AI code editor
8.4
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SEO Score API
A free SEO audit API for developers
10
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exployt
Your AI Company - Agents managing Agents
9.3
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Cypress
Automated front-end testing tool for web applications
8
7
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Git
Free and open-source distributed version control system
8.7
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Playwright
Automate browser interactions with a high-level API
9
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Codecademy's Code Companion
Interactive coding education tool for beginners
7.5
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Microsoft Visual Studio Code
Free AI-powered code editor for Windows, macOS, and Linux
9
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GitHub Pages
Hosted websites for GitHub repositories
7.5
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WakaTime AI
Open source IDE plugins for programmers
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claw-code
512,000 lines rewritten in a night
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VSCode's AI Assistant
Autonomous AI agent for Visual Studio Code development
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BepInEx
Patcher and plug-in framework for Unity games
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Hugo
Fast and flexible static site generator
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Eclipsa Audio
Open-Source, Royalty-Free Immersive Audio Solutions for the Modern Era.
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Visual Studio Code AI-powered Suggestions
Get AI-powered inline suggestions from GitHub Copilot in VS Code, including ghost text completions and next edit suggestions
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Appium
Cross-platform automation tool for mobile and web applications
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Middleman
Static site generator for web development
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Edraw Max
Create and edit diagrams with AI-powered tools
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PlayN
Cross-platform game development library for Java
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Ragel
Finite state machine compiler and parser generator
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Veracity
an open source, distributed version control and bug tracking system for Windows, Mac OS X, and Linux
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Franca IDL
Textual language for specifying APIs
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FreeFem++
FreeFem++ is a programming language and a software focused on solving partial differential equations using the finite element method. FreeFem++ is wri
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FreeProxy
Free and open-source content management system
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HYPHY
Open-source computational phylogenetics software for natural selection inference and recombination detection
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ChilliSpot
ChilliSpot is an Open Source Captive Portal for Authenticating Wi-Fi or LAN users with web based login
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Verilator
Fastest open-source Verilog/SystemVerilog simulator
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WebSharper
Functional reactive web programming for .NET
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BioPerl
Collection of Perl modules for bioinformatics tasks
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CANoe
Strong development and test platform for all working with distributed embedded systems, regardless of the industry
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Pharo
Open-source Smalltalk environment for object-oriented programming
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CodeMote
Control Claude Code, Codex, and any CLI coding agent from your iPhone or iPad
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Mozaik
Mozaik is an open-source TypeScript runtime for concurrent AI agents that run in parallel, share state, react to events, and coordinate without predefined workflows or fixed handoffs
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Tamamon
A free macOS desktop pet that grows as you code with Claude
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Modelence
Describe what you want and get a production-ready app with auth, database, and deployment built in
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DevGlobe
Connect your IDE and show up on a real-time 3D globe
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StaleMate
A free macOS menu bar app that tracks your GitHub pull requests — stale-PR alerts, multi-repo views, and review status at a glance
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Monako.ai
Monako
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agentcad
Give your coding agent the ability to design real CAD output
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GitGem
Trending, curated, and community-showcased open source projects from GitHub
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openstatus
Ship your status page before your SOC 2 auditor asks for it
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Haystack
AI-powered code reviews that guide you through changes in logical order, keeping reviews fast and focused
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agentmemory
Persistent memory for AI coding agents
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GitHired | Find your next 100x engineer
GitHired helps you hire developers who actually ship production-ready code by analyzing their GitHub activity
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Rosentic
Check every PR against active agent branches before merge
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LaReview: The Code Review Workbench
Stop doom-scrolling
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OnSpace.AI
Free AI app builder