OSSDrop is a curated home for open-source tools — a community-maintained directory where makers drop their own tool 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, discuss on r/OSSDrop, or drop your tool — it takes one PR and it's free.

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

  

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

  

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.			code
Transformers	Hugging Face's library of pretrained models for text, vision, and audio — the standard toolkit for transformer models.			code
Grok-1	Open-weights release of xAI's 314B-parameter Grok-1 large language model, with JAX example code.			code
Aider	AI pair programming in your terminal; edits files in your local git repo and commits as it goes.			code · docs
Continue	Open-source AI coding assistant for VS Code and JetBrains that works with the models you choose.			code
Gemma	Google DeepMind's open-weight LLM library, with JAX tooling to run and fine-tune the Gemma models.			code
RecurrentGemma	Google DeepMind's open-weight language model based on the Griffin architecture for fast, memory-efficient inference.			code
projectmem	Local-first, event-sourced memory + judgment layer for AI coding agents; warns before repeating a failed fix.			code · paper

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.			code
Go	Google's open-source programming language for building simple, reliable, and efficient software.			code
Neovim	Hyperextensible, Vim-based text editor with a built-in language server client and Lua scripting.			code
Playwright	Microsoft's framework for reliable end-to-end browser testing across Chromium, Firefox, and WebKit.			code
MCP Servers	Reference server implementations for the Model Context Protocol, the open standard connecting AI assistants to tools and data.			code
Zed	High-performance, multiplayer code editor written in Rust, from the creators of Atom and Tree-sitter.			code
fzf	General-purpose command-line fuzzy finder for files, history, and processes; integrates with the shell and Vim.			code
lazygit	Simple terminal UI for Git commands.			code
ripgrep	Fast recursive regex search over directories that respects your .gitignore.			code
bat	A cat clone with syntax highlighting and Git integration.			code
Starship	Fast, customizable command-line prompt for any shell — shows git status, versions, and context at a glance.			code

Tool	What it is	License	Stars	Links
React	Meta's JavaScript library for building user interfaces from reusable components.			code
Flutter	Google's UI toolkit for building natively compiled apps for mobile, web, and desktop from one codebase.			code
Next.js	Vercel's React framework for production — full-stack rendering, routing, and built-in optimizations.			code
Supabase	Open-source Firebase alternative: a Postgres database with auth, storage, realtime, and auto-generated APIs.			code
FastAPI	Modern, high-performance Python web framework for building APIs, with automatic docs and type validation.			code
Bun	Fast all-in-one JavaScript runtime, bundler, test runner, and package manager, built as a drop-in for Node.			code
Hoppscotch	API development environment in the browser: REST, GraphQL, and realtime clients; self-hostable.			code · docs
HTTPie	User-friendly command-line HTTP client with JSON support and syntax highlighting.			code · docs

Tool	What it is	License	Stars	Links
Meilisearch	Fast, typo-tolerant search engine with a simple API.			code · docs
ClickHouse	Column-oriented database management system for real-time analytics over very large datasets.			code
DuckDB	In-process analytical SQL database; runs OLAP queries inside your app or notebook.			code · docs
Qdrant	High-performance vector database and search engine for embeddings — powers semantic search and RAG.			code
Valkey	High-performance in-memory key-value data store; a community-driven fork of Redis under an open license.			code

Tool	What it is	License	Stars	Links
Kubernetes	Production-grade container orchestration to automate deployment, scaling, and management of containerized apps.			code
Uptime Kuma	Self-hosted uptime monitoring tool with status pages and notifications.			code
Grafana	Open observability platform to query, visualize, and alert on metrics, logs, and traces.			code
Caddy	Web server and reverse proxy with automatic HTTPS by default, configured in a simple, readable file.			code
Coolify	Self-hostable platform to deploy apps, databases, and static sites; an open alternative to Heroku and Netlify.			code
Portainer	Web UI to manage Docker, Swarm, and Kubernetes — deploy, monitor, and control containers from a browser.			code
OpenTofu	Infrastructure-as-code tool to provision cloud and on-prem resources declaratively; community-driven fork of Terraform.			code

Tool	What it is	License	Stars	Links
Syncthing	Continuous, peer-to-peer file synchronization between your devices — private, encrypted, no cloud required.			code
rclone	Command-line program to sync, copy, and manage files across dozens of cloud storage providers.			code

Tool	What it is	License	Stars	Links
Vaultwarden	Lightweight, self-hostable server compatible with Bitwarden clients — run your own password manager.			code
KeePassXC	Cross-platform, offline password manager; community continuation of KeePass.			code · docs
Cryptomator	Client-side, password-based encryption for your cloud files, across desktop and mobile.			code

Tool	What it is	License	Stars	Links
PowerToys	Microsoft's set of power-user utilities for Windows: window management, bulk rename, color picker, and more.			code
Excalidraw	Virtual whiteboard for sketching hand-drawn-style diagrams and wireframes, with live collaboration.			code
AppFlowy	Open-source Notion alternative for notes, docs, and project boards — local-first and self-hostable.			code
GemType	Free, open-source Grammarly alternative: AI grammar and rewrite for Chrome and Safari.			code

Tool	What it is	License	Stars	Links
Joplin	Privacy-focused, open-source note-taking and to-do app with end-to-end encrypted sync across devices.			code
Logseq	Privacy-first, local-first knowledge base for networked notes and outlines over plain Markdown files.			code

Tool	What it is	License	Stars	Links
Jitsi Meet	Encrypted, self-hostable video conferencing — start or join a meeting from the browser, no account needed.			code

Tool	What it is	License	Stars	Links
Home Assistant	Open-source home automation that puts local control and privacy first, integrating thousands of devices.			code
Node-RED	Low-code, flow-based tool for wiring together APIs, devices, and services — visual automation in the browser.			code

Tool	What it is	License	Stars	Links
Firefly III	Self-hosted personal finance manager to track accounts, budgets, and bills, with reports and rules.			code

Tool	What it is	License	Stars	Links
TensorFlow	Google's end-to-end open-source platform for machine learning, from research to production.			code
PyTorch	Meta's Python-first deep-learning framework with strong GPU acceleration and dynamic graphs.			code
JupyterLab	Web-based interactive development environment for notebooks, code, and data across many languages.			code
QGIS	Free, cross-platform desktop GIS for creating, editing, analysing, and publishing geospatial data.			code
AcadGIS	Publication-ready study-area maps, choropleths, and locator insets for research papers, in Python.			code

Tool	What it is	License	Stars	Links
Whisper	OpenAI's robust multilingual speech-to-text model for transcription and translation.			code
OBS Studio	Free, open-source software for live streaming and screen recording.			code · docs
VibeVoice	Microsoft's open-source frontier text-to-speech model for long-form, multi-speaker conversational audio.			code
Blender	Free 3D creation suite: modeling, sculpting, animation, simulation, rendering, and video editing.			code
ACE-Step	An open-source foundation model for music generation, built for fast, controllable, full-length track synthesis.			code

Built something open source? Add one entry to data/tools.json and open a PR — see CONTRIBUTING.md. One tool per PR. Stars, icons, and trending are computed automatically; descriptions stay honest.

What is OSSDrop? OSSDrop is a curated, community-maintained list of open-source tools, organized into categories spanning AI and coding agents, developer tools and CLI utilities, web and APIs, data and databases, DevOps and self-hosted software, files and sync, security and privacy, productivity, notes and knowledge, communication and social, automation and IoT, finance and business, science and education, and creator and media tools.

How do I add my open-source tool to the list? Fork this repository, add one JSON object to data/tools.json, and open a pull request. Requirements: a public repository and an OSI-approved license. See CONTRIBUTING.md.

Is listing free? Can rankings be bought? Listing is free and rankings cannot be bought. Tables are sorted by live GitHub star count and “Trending this week” is computed from daily star snapshots. The one pinned showcase card is always labeled as pinned.

Where else does OSSDrop live? On Reddit at r/OSSDrop for discussion, and at ossdrop.com (coming soon). The GitHub organization is github.com/OSSDrop.

Can I reuse this list's data? Yes — the list content is public domain (CC0-1.0), and data/tools.json is the machine-readable source of truth. Each linked tool keeps its own license.

_{Star counts and licenses render live via shields.io; trending is computed from daily snapshots in data/stars.json.}