What is OSSDrop?

OSSDrop is a curated home for open-source tools — a community-maintained place to discover, share, and discuss developer tools, self-hosted apps, and libraries. Makers drop their own project with a single pull request. Every entry is a real open-source project: public repository, OSI license, honest one-line description. Star counts, icons, and trending update automatically, and no placement on this list is paid.

Browse by category below, explore the same tools ranked at ossdrop.com, discuss on r/OSSDrop, or drop your tool — it takes one PR and it's free.

Trending this week

_{The biggest star gains among listed tools in the last 7 days — measured, not editorialized.}

  

Most starred

_{The heaviest hitters on the list — recomputed nightly.}

  

AI & Coding Agents

| Tool | What it is | License | Stars | Links | | --- | --- | --- | --- | --- | | Ollama | Run open large language models locally with a simple CLI and API — pull a model and start chatting or building. | !MIT | | code | | Transformers | Hugging Face's library of pretrained models for text, vision, and audio — the standard toolkit for transformer models. | !Apache-2.0 | | code | | LangChain | Framework for building applications and agents powered by large language models. | !MIT | | code | | llama.cpp | C/C++ library for running LLM inference locally on CPUs and GPUs. | !MIT | | code | | Codex CLI | Terminal-based coding agent from OpenAI that reads, edits, and runs code in your local repository. | !Apache-2.0 | | code | | vLLM | Inference and serving engine for running large language models. | !Apache-2.0 | | code | | OpenHands | AI agent platform that writes code, runs shell commands, and browses the web to complete software engineering tasks. | !MIT | | code | | Unsloth | Library for faster fine-tuning and training of large language models with lower memory use. | !Apache-2.0 | | code | | MetaGPT | Multi-agent framework that simulates a software company's roles to turn one-line requirements into code. | !MIT | | code | | Cline | Autonomous coding agent for VS Code that can create and edit files, run terminal commands, and use a browser. | !Apache-2.0 | | code | | Open Interpreter | Terminal coding agent that lets open models such as DeepSeek, Kimi, and Qwen read, write, and run code. | !Apache-2.0 | | code | | Mem0 | Memory layer that gives AI agents persistent, personalized recall across sessions. | !Apache-2.0 | | code | | AnythingLLM | Desktop and Docker app for chatting with documents and running local LLM-based agents. | !MIT | | code | | crewAI | Framework for orchestrating role-based, collaborative multi-agent workflows, built independent of LangChain. | !MIT | | code | | Goose | Extensible AI agent that can install, execute, edit, and test code locally with any LLM backend. | !Apache-2.0 | | code | | LlamaIndex | Python framework for connecting LLMs to external data via indexing, retrieval, and document agents. | !MIT | | code | | Grok-1 | Open-weights release of xAI's 314B-parameter Grok-1 large language model, with JAX example code. | !Apache-2.0 | | code | | Aider | AI pair programming in your terminal; edits files in your local git repo and commits as it goes. | !Apache-2.0 | | code · docs | | LibreChat | A self-hostable chat interface supporting multiple AI models and providers with multi-user auth. | !MIT | | code | | LangGraph | Low-level framework from the LangChain team for building stateful, multi-step AI agents as graphs. | !MIT | | code | | BitNet | Microsoft's official inference framework for running 1-bit large language models. | !MIT | | code | | MediaPipe | Google's cross-platform framework for building on-device machine learning pipelines for media. | !Apache-2.0 | | code | | JAX | A Python library for array computing with automatic differentiation and JIT compilation to GPU/TPU. | !Apache-2.0 | | code | | GraphRAG | Microsoft's modular, graph-based retrieval-augmented generation (RAG) system. | !MIT | | code | | Continue | Open-source AI coding assistant for VS Code and JetBrains that works with the models you choose. | !Apache-2.0 | | code | | Tabby | Self-hosted AI coding assistant with code completion and chat, an alternative to GitHub Copilot. | !Apache-2.0 | | code | | smolagents | Minimal Python library for building agents that act by writing and running code. | !Apache-2.0 | | code | | Semantic Kernel | SDK for integrating large language models into applications with plugins, planning and memory. | !MIT | | code | | Haystack | Framework for building LLM applications with modular pipelines for retrieval, RAG, agents, and semantic search. | !Apache-2.0 | | code | | JARVIS | System that uses an LLM as a controller to connect and orchestrate machine learning models for multi-step tasks. | !MIT | | code | | Gemma | Google DeepMind's open-weight LLM library, with JAX tooling to run and fine-tune the Gemma models. | !Apache-2.0 | | code | | Atomic Agent | Local-first CLI and TUI coding agent that runs open-weight models entirely on your machine, with no account or API key required. | !MIT | | code · docs | | projectmem | Local-first, event-sourced memory + judgment layer for AI coding agents; warns before repeating a failed fix. | !MIT | | code · paper | | RecurrentGemma | Google DeepMind's open-weight language model based on the Griffin architecture for fast, memory-efficient inference. | !Apache-2.0 | | code | | agent-manager | Terminal UI for developers that runs coding-agent CLIs like Claude Code and Codex side by side, each in its own persistent tmux session. | !Apache-2.0 | | code · docs | | OrcaReplay | Records a coding agent's session and replays it offline, for developers debugging agent runs without spending tokens. | !Apache-2.0 | | code | | Orbi | Self-hostable coding agent for GitHub: label an Issue and it opens a tested PR, gets a separate AI review, and merges it. | !AGPL-3.0 | | code · docs | | Jev Social | Local-first AI agent that routes social research through socai to capture browser evidence and stream a cited report. | !MIT | | code · docs | | 5dive | Runs AI coding-agent CLIs as a team on your own Linux server: each agent is a Linux user and systemd service sharing one task queue. | !MIT | | code · docs | | YYLO | Command-line orchestrator for coding agents, with typed task, validation, merge, and release-readiness boundaries across agent worktrees. | !MIT | | code | | Mnemoverse | Hosted persistent memory for AI agents over MCP; tell it a recalled memory helped or misled and it re-ranks what comes back next. | !MIT | | code · docs | | evex | Open registry of Eve agents you install with the shadcn CLI. | !MIT | | code · docs | | vixl | Local-first alternative to Cursor, Antigravity, and VS Code agents. Progressive tool discovery keeps local models fast. | !MIT | | code | | Orchestrator | Free Mac workspace for developers to manage Codex tasks and review the resulting code changes. | !MIT | | code · docs | | Skills Board | Shared library of AI agent skills for teams: curate recommended skills once, use them from GitHub, an install command, ZIP, or MCP. | !MIT | | code · docs | | molt | Coding agent that won't say done on a false claim. Checks pass on disk or it refuses. | !Apache-2.0 | | code | | Solaris Dev Shop | Free MIT skill library that routes a task to one accountable specialist. | !MIT | | code | | System One SDK | TypeScript SDK for AI-agent decision layers, with adapters for the hosted System One API or your own local model runtimes. | !MIT | | code · docs | | YYLO Skills | Reusable agent skills maintained by YYLO: canonical SKILL.md packs for ledger tasks, wiki, workflow, and project understanding. | !MIT | | code | | RuleBridge | CLI for normalizing and checking AI coding rules across agents and tools. | !MIT | | code | | loopsmith | Rust CLI that runs a repeatable task as a self-correcting agent loop, finished only when a deterministic checker, not the AI, passes. | !MIT | | code |

Developer Tools & CLI

| Tool | What it is | License | Stars | Links | | --- | --- | --- | --- | --- | | VS Code | Microsoft's open-source code editor with rich extensions, debugging, and Git — the core of Visual Studio Code. | !MIT | | code | | MarkItDown | Python tool and CLI for converting files and Office documents to Markdown. | !MIT | | code | | Oh My Zsh | Community framework for managing Zsh shell configuration, with plugins, themes, and helpers. | !MIT | | code | | Go | Google's open-source programming language for building simple, reliable, and efficient software. | !BSD-3-Clause | | code | | React Native | Framework for building native iOS and Android apps using React. | !MIT | | code | | Electron | Framework for building cross-platform desktop apps with JavaScript, HTML, and CSS. | !MIT | | code | | three.js | JavaScript library for creating and rendering 3D graphics in the browser via WebGL. | !MIT | | code | | D3.js | JavaScript library for producing data visualizations using SVG, Canvas, and HTML. | !ISC | | code | | Tauri | Toolkit for building desktop and mobile apps with a web frontend and Rust backend. | !Apache-2.0 | | code | | TypeScript | Typed superset of JavaScript that compiles to plain JavaScript. | !Apache-2.0 | | code | | Deno | Runtime for JavaScript and TypeScript built on V8, with built-in tooling. | !MIT | | code | | Windows Terminal | Terminal application for Windows with tabs, panes, and Unicode support. | !MIT | | code | | Neovim | Hyperextensible, Vim-based text editor with a built-in language server client and Lua scripting. | !Apache-2.0 | | code | | Create React App | Command-line tool to scaffold a single-page React application with a preconfigured build setup. | !MIT | | code | | Angular | TypeScript framework for building single-page web applications, maintained by Google. | !MIT | | code | | Material UI | React component library implementing Google's Material Design. | !MIT | | code | | Playwright | Microsoft's framework for reliable end-to-end browser testing across Chromium, Firefox, and WebKit. | !Apache-2.0 | | code | | Tailwind CSS | Utility-first CSS framework for styling web interfaces with composable classes. | !MIT | | code | | Zed | High-performance, multiplayer code editor written in Rust, from the creators of Atom and Tree-sitter. | !GPL-3.0 | | code | | MCP Servers | Reference server implementations for the Model Context Protocol, the open standard connecting AI assistants to tools and data. | !Apache-2.0 | | code | | Storybook | Tool for developing, documenting, and testing UI components in isolation. | !MIT | | code | | uv | Python package and project manager written in Rust. | !Apache-2.0 | | code | | Svelte | JavaScript framework that compiles components to minimal JavaScript at build time. | !MIT | | code | | fzf | General-purpose command-line fuzzy finder for files, history, and processes; integrates with the shell and Vim. | !MIT | | code | | Vite | Frontend build tool and development server for modern web projects. | !MIT | | code | | lazygit | Simple terminal UI for Git commands. | !MIT | | code | | act | Runs GitHub Actions workflows locally in Docker, for testing CI before pushing. | !MIT | | code | | ripgrep | Fast recursive regex search over directories that respects your .gitignore. | !Unlicense/MIT | | code | | Docusaurus | Static-site generator for building and maintaining documentation websites. | !MIT | | code | |