Open-source startups in Developer tools

The open source coding agent.

A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode,DeepSeek Harness and more. Only official website: ccswitch.io

Orca is the place for working with a fleet of agents (e.g. Grok Bot, Claude Code). Run any coding agent with your own subscription. Available on desktop, mobile and remote runtime.

Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.

🙌 OpenHands: AI-Driven Development

Drop in a screenshot and convert it to clean code (HTML/Tailwind/React/Vue)

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

VS Code in the browser

A terminal for a more modern age

Daytona is a Secure and Elastic Infrastructure for Running AI-Generated Code

Autonomous coding agent as an SDK, IDE extension, or CLI assistant.

A coding agent for open models like Kimi K3 and GLM 5.3

Warp is an agentic development environment, born out of the terminal.

Context7 Platform -- Up-to-date docs for AI agents

👻 Ghostty is a fast, feature-rich, and cross-platform terminal emulator that uses platform-native UI and GPU acceleration.

Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

The painless way to host your own Git service

✨ Innovative and open-source visualization application that transforms various data formats, such as JSON, YAML, XML and CSV into interactive graphs.

Lightning-fast and Powerful Code Editor written in Rust

Harness Open Source is an end-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries.

open-source coding agent

Self-hosted AI coding assistant

The first real AI developer

No description on the repository.

🔥 Clone and recreate any website as a modern React app in seconds

Kilo is the all-in-one agentic engineering platform. Build, ship, and iterate faster with the most popular open source coding agent.

YApi 是一个可本地部署的、打通前后端及QA的、可视化的接口管理平台

A modified web browser that helps in responsive web development. A web developer's must have dev-tool.

IDE-style autocomplete for your existing terminal & shell

GitLab CE Mirror | Please open new issues in our issue tracker on GitLab.com

Roo Code gives you a whole dev team of AI agents in your code editor.

A reactive notebook for Python — run reproducible experiments, query with SQL, execute as a script, deploy as an app, and version with git. Stored as pure Python. All in a modern, AI-native editor.

One second to read GitHub code with VS Code.

GitHub on steroids

📝 CodeEdit App for macOS – Elevate your code editing experience. Open source, free forever.

An open-source, AI-integrated, cross-platform terminal for seamless workflows

Orchestrate multiple coding agents from desktop and mobile

CodeHub is an iOS application written using Xamarin

The GitButler version control client, backed by Git, powered by Tauri/Rust/Svelte

The fastest browser for AI agents to run browser automation, built for sharing your logged-in browser state with your AI agents, like Codex or Claude Code, without disturbing you. Zero cost, zero config.

Linux shell for iOS

daily.dev is the personalized developer news feed and community. Get the best tech content from all over the web in your browser new tab or on mobile. Free and open source.

Devika is the first open-source implementation of an Agentic Software Engineer. Initially started as an open-source alternative to Devin.

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.

AI-powered development workspaces with reusable components, architectural clarity and zero overhead.

A lightweight Node.js private proxy registry

Virtual Machine for the Web

Secure environments for developers and their agents

Prompt, run, edit, and deploy full-stack web applications. -- bolt.new -- Help Center: https://support.bolt.new/ -- Community Support: https://discord.com/invite/stackblitz

Sourcetrail - free and open-source interactive source explorer

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

Web and API based SMTP testing

MCP server to provide Figma layout information to AI coding agents like Cursor

Amplication brings order to the chaos of large-scale software development by creating Golden Paths for developers - streamlined workflows that drive consistency, enable high-quality code practices, simplify onboarding, and accelerate standardized delivery across teams.

🚀 Level up your GitHub profile readme with customizable cards including LOC statistics!

Open source AI coding agent. Designed for large projects and real world tasks.

Paradev (formerly Superset) is an agentic IDE to orchestrate 100+ coding agents in parallel. Run any agent with your own subscription.

Eigent: The Open Source Cowork Desktop - Local and Free Alternative to Claude Cowork and Codex

A Java 8+ Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)

See interfaces like a human. E2E testing in natural language.

The Unified and Autonomous Development Platform

Codespaces but open-source, client-only and unopinionated: Works with any IDE and lets you use any cloud, kubernetes or just localhost docker.

Open source API-compatible alternative to the text editor Sublime Text

本地优先的跨平台 Claude Code / AI Agent 桌面工作台：多 Agent 协作、Git Worktree、代码 Diff、技能市场、多模型、Computer Use、桌面宠物；支持微信、飞书、钉钉及 H5 等远程访问。 | Local-first Claude Code / AI Agent desktop workspace: multi-agent teams, Git worktrees, diffs, skills marketplace, multi-model, Computer Use, task-aware desktop pets; remote via WeChat, Feishu, DingTalk, Telegram, WhatsApp & H5.

FauxPilot - an open-source alternative to GitHub Copilot server

Autonomous multi-session AI coding

TextMate is a graphical text editor for macOS 10.12 or later

Plan, run and supervise fleets of agents from task to merged PR. Desktop (macOS, Windows, Linux) + iPhone & Android apps. Supports Claude Code, Codex & 35+ coding agents.

Control and manage Android devices from your browser.

Open-source feature management platform

The developer platform for on-demand cloud development environments to create software faster and more securely.

An online IDE for rapid web development

MeterSphere 是新一代的开源持续测试工具，内置 AI 助手，让软件测试工作更简单、更高效，不再成为持续交付的瓶颈。

Connect your agents & product to 1,000 APIs.

Offline documentation browser. Your personal reference library, searchable in an instant.

The Git interface you've been missing all your life has finally arrived.

The Light Table IDE ⛺

Oni: Modern Modal Editing - powered by Neovim

Continuous Inspection

Online IDE powered by Visual Studio Code ⚡️

JSON Hero is an open-source, beautiful JSON explorer for the web that lets you browse, search and navigate your JSON files at speed. 🚀. Built with 💜 by the Trigger.dev team.

AI Code Completions

Reactide is the first dedicated IDE for React web application development.

Code AI platform with Code Search & Cody

TweetDeck for GitHub - Filter Issues, Activities & Notifications - Web, Mobile & Desktop with 99% code sharing between them