Open Source Projects tagged "Developer Tools"
A curated collection of the best open source projects tagged "Developer Tools". Each listing includes a website screenshot along with a detailed review of its features.
AI coding agent that works inside your terminal
Stars
Stars growing over the last 30 days135,176Last commit
5 hours agoLicense
Apache-2.0
Terminal-based AI coding agent that inspects files, edits code, runs commands, and integrates into CI pipelines using OpenAI's Codex models.
Open Source Alternative to:
Autonomous coding agents that complete real engineering tasks
Stars
93,420Last commit
5 hours agoLicense
MIT
AI agent platform that runs autonomous coding agents to plan, write, and ship changes across codebases end-to-end, with support for any model and self-hosted deployment.
Open Source Alternative to:
Hyperextensible, Lua-powered Vim-based text editor
Stars
103,621Last commit
12 hours agoLicense
Unknown
A modernized Vim fork with built-in LSP, Lua scripting, Tree-sitter parsing, and an async plugin architecture that works the same across every platform.
Open Source Alternative to:
Sleek, intuitive API development and testing platform
Stars
80,800Last commit
9 days agoLicense
MIT
Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.
Open Source Alternative to:
Coding agent that runs on local and open-weight models
Stars
68,881Last commit
9 hours agoLicense
Apache-2.0
Coding agent that lets LLMs write and execute code, manage files, and control your computer using local or low-cost models.
Open Source Alternative to:
Lightweight, fast, and open-source API client for developers
Stars
48,392Last commit
1 day agoLicense
MIT
A modern, user-friendly API client that simplifies API testing and development with a clean interface and powerful features.
Open Source Alternative to:
Model-agnostic platform for building intelligent AI agents
Stars
43,181Last commit
7 hours agoLicense
Apache-2.0
Open-source platform that enables developers to create, deploy and monitor AI agents with built-in memory, knowledge integration, and external tool connectivity.
Open Source Alternative to:
Open-source coding agent for your IDE and terminal
Stars
36,473Last commit
11 hours agoLicense
Apache-2.0
Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.
Open Source Alternative to:
Empower your team to build custom internal tools rapidly
Stars
41,247Last commit
5 hours agoLicense
Apache-2.0
Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.
Open Source Alternative to:
Open source AI coding agent for the terminal and IDE
Stars
Stars growing over the last 30 days30,112Last commit
5 hours agoLicense
Apache-2.0
Terminal-based AI coding agent that reads your codebase, edits files and runs commands, with support for Qwen, OpenAI, Anthropic, Gemini and local models.
Open Source Alternative to:
Build data-rich React apps with ease and flexibility
Stars
36,035Last commit
2 months agoLicense
MIT
A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.
Open Source Alternative to:
AI-powered code completion for seamless development
Stars
33,936Last commit
5 months agoLicense
Apache-2.0
Self-hosted AI coding assistant that enhances productivity with context-aware suggestions and privacy-focused implementation.
Open Source Alternative to:
Run coding agents from your phone, desktop, or terminal
Stars
Stars growing quickly over the last 30 days23,993Last commit
9 hours agoLicense
Apache-2.0
Self-hosted orchestrator for coding agents like Claude Code, Codex, and Cursor, controlled from phone, desktop, web, or CLI.
Open Source Alternative to:
Full-stack Python platform for web apps and internal tools
Stars
29,021Last commit
5 hours agoLicense
Apache-2.0
Build, iterate, and deploy full-stack web apps entirely in Python. Reflex combines an AI app builder, a full-stack framework, and one-click deployment in one platform.
Open Source Alternative to:
Build custom apps without code, deploy with ease
Stars
24,916Last commit
6 hours agoLicense
Unknown
Open-source no-code platform for creating tailored business applications quickly, with full customization and easy deployment options.
Open Source Alternative to:
AI agents that autonomously fix code and resolve GitHub issues
Stars
20,798Last commit
4 days agoLicense
MIT
State-of-the-art AI agent that uses language models like GPT-4o to autonomously solve GitHub issues, fix bugs, and implement features with configurable YAML setup.
Open Source Alternative to:
Cross-platform terminal with AI built in
Stars
22,701Last commit
8 days agoLicense
Apache-2.0
Enhance your terminal with AI, file previews, and web browsing. Available on MacOS, Linux, and Windows.
Open Source Alternative to:
Run a fleet of coding agents across branches and PRs
Stars
14,587Last commit
5 hours agoLicense
Apache-2.0
Manages multiple AI coding agents in parallel, tracking branches, CI results, and review comments so you can merge work without babysitting each session.
Open Source Alternative to:
Run dozens of AI coding agents in parallel on your machine
Stars
Stars growing over the last 30 days16,282Last commit
5 hours agoLicense
MIT
Desktop app for macOS and Linux that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.
Open Source Alternative to:
Fast grammar checking that respects your privacy
Stars
Stars growing over the last 30 days17,680Last commit
8 hours agoLicense
Apache-2.0
Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.
Open Source Alternative to:
Common layer for composing and governing AI agents
Stars
Stars growing over the last 30 days11,370Last commit
5 hours agoLicense
Apache-2.0
Meta-harness that sits above Claude Code, Codex, and other AI agents to add policy enforcement, sandboxing, and real-time collaborative sessions.
Open Source Alternative to:
Graph database built for GraphRAG and multi-tenant AI apps
Stars
Stars growing over the last 30 days10,514Last commit
7 hours agoLicense
SSPL-1.0
Graph database using sparse matrix representation and linear algebra to deliver ultra-low latency Cypher queries, native multi-tenancy, and built-in GraphRAG support for AI applications.
Open Source Alternative to:
An agentic IDE that can control and automate itself
Stars
Stars growing quickly over the last 30 days5,522Last commit
5 hours agoLicense
MIT
Local-first IDE that runs multiple AI coding agents in parallel, supports plugins built in a single prompt, and lets any script or bot spawn work threads.
Open Source Alternative to:
Intercept, modify, and debug HTTP(S) requests effortlessly
Stars
6,766Last commit
14 hours agoLicense
AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing
Open Source Alternative to:
Build reliable AI agents with unified tool integration
Stars
4,936Last commit
12 days agoLicense
Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server
Open Source Alternative to:
Track coding time effortlessly, gain insights instantly
Stars
4,478Last commit
4 days agoLicense
MIT
Open-source, self-hosted time tracking solution for developers. Analyze coding habits, improve productivity, and visualize progress.
Open Source Alternative to:
AI-powered platform for engineering LLM products
Stars
Stars growing over the last 30 days3,488Last commit
6 hours agoLicense
Apache-2.0
Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.
Open Source Alternative to:
Modern command-line HTTP client for the API era
Stars
4,053Last commit
2 years agoLicense
BSD-3-Clause
Intuitive, user-friendly CLI tool for making HTTP requests, debugging APIs, and testing web services with ease and efficiency.
Open Source Alternative to:
Terminal coding agent with full model and data control
Stars
1,781Last commit
7 hours agoLicense
MIT
Open-source AI coding agent for the terminal that works with 25+ model providers, keeps sessions on your disk, and ships as a single Go binary with no telemetry.
Open Source Alternative to:
Fast, local-first Git GUI built in Rust
Stars
Stars growing quickly over the last 30 days1,036Last commit
3 days agoLicense
AGPL-3.0
Open source Git GUI for Linux, macOS, and Windows, built in Rust for speed on large repositories with full diff, merge, and history tooling.
Open Source Alternative to:
Visual regression testing made effortless
Stars
1,678Last commit
7 months agoLicense
MIT
Automated visual testing tool that detects UI changes, ensures consistency, and accelerates development workflows.
Open Source Alternative to:
AI coding agent that sees your live app and edits code
Stars
723Last commit
6 hours agoLicense
Apache-2.0
Open-source AI coding agent that runs in your browser, sees your live DOM and app state, and makes real code edits from plain English descriptions.
Open Source Alternative to:
Fast, secure, offline API client for REST and gRPC
Stars
732Last commit
9 days agoLicense
BSD-3-Clause
Cross-platform API client offering fast, secure, and offline testing for REST and gRPC services. Available on macOS, Windows, and Linux with intuitive design.
Open Source Alternative to:
Messaging SDK with AI agents for web, iOS, and Android
Stars
553Last commit
2 days agoLicense
Apache-2.0
Build branded chat apps with AI agents, group messaging, document exchange, and digital wallets using React and React Native components.
Open Source Alternative to:
Self-hostable image and video delivery with URL transforms
Stars
Stars growing over the last 30 days428Last commit
7 days agoLicense
AGPL-3.0
Upload, transform, and deliver images and videos via a REST API and URL parameters, using your own S3-compatible storage. Cloudinary-compatible syntax, no vendor lock-in.
Open Source Alternative to:
Open-source GraphQL federation platform
Stars
483Last commit
6 hours agoLicense
MIT
A fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs
Open Source Alternative to:
Simplify project management for developers
Stars
463Last commit
15 hours agoLicense
Apache-2.0
Shelve is a comprehensive project management tool designed to streamline workflows and enhance collaboration for developers and teams.
Open Source Alternative to:
Track coding time and boost developer productivity
Stars
259Last commit
22 days agoLicense
AGPL-3.0
Monitor your coding sessions, analyze productivity patterns, and gain insights into your development workflow with comprehensive time tracking statistics.
Open Source Alternative to:
Self-hosted visual bug reporting with screenshot annotation
Stars
52Last commit
5 hours agoLicense
AGPL-3.0
Embeds a lightweight widget into web apps so users can capture screenshots, annotate issues, and submit reports with console logs and browser metadata included.
Open Source Alternative to:
Access control for AI agents your customers log in with
Stars
23Last commit
10 days agoLicense
BUSL-1.1
Detects AI agents using customer credentials, masks private fields, holds risky actions for passkey approval, and signs every decision on your own server.
Open Source Alternative to:
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