420.9k
Public APIs
A curated list of free APIs for use in software and web development, enabling easy discovery of public API resources.
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Best Open-Source Tools Tools in 2026
A curated list of the best, top, and most popular open-source tools tools available right now. Showing the top 30 of 506 tools tools in our directory, ranked by GitHub stars.
- 291.8k
Awesome Python
An opinionated and comprehensive list of awesome Python frameworks, libraries, software, and resources.
🕶️ Awesome🐍 Python🎓 Learning & Career🛠️ Tools - 214.5k
The Book of Secret Knowledge
A comprehensive collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, and a variety of CLI/web tools to enhance your knowledge.
🛠️ Tools🔨 Utils💡 Best Practices - 186.1k
Oh My Zsh
A delightful community-driven framework for managing your Zsh configuration, with over 2,400 contributors, 300+ plugins, and 140+ themes.
👨💻 Development🛠️ Tools⌨️ CLI⚡ Productivity - 173.4k
AutoGPT
AutoGPT is the vision of accessible AI for everyone, providing tools to focus on what matters in building and utilizing AI.
🤖 AI👨💻 Development🛠️ Tools - 168.6k
Ollama
Ollama is an AI platform that enables you to easily run and experiment with popular open source and proprietary language models like OpenAI gpt-oss, DeepSeek-R1, Gemma 3, and more—locally, with a focus on privacy and low setup overhead.
🤖 AI👨💻 Development🛠️ Tools - 158.9k
Stable-diffusion-webui
A comprehensive web-based user interface for Stable Diffusion, providing powerful tools for generating and modifying images using AI models directly from your browser.
🤖 AI🌐 Web🛠️ Tools📈 Visualization - 156.2k
Yt-dlp
A feature-rich command-line tool for downloading audio and video from YouTube and other sites.
⌨️ CLI👨💻 Development🏠 Self-Hosted🛠️ Tools - 139.5k
Awesome ChatGPT Prompts
A curated collection of ChatGPT prompts to enhance the use of ChatGPT and other language model tools.
🤖 AI🛠️ Tools🕶️ Awesome🎓 Learning & Career - 137.3k
Dify
A production-ready platform facilitating the development of agentic workflows with robust features and integration capabilities.
👨💻 Development🤖 AI⚡ Productivity🛠️ Tools - 131.3k
Open-webui
A user-friendly AI interface that supports Ollama, OpenAI API, and other AI backends, providing an accessible platform for interacting with AI models.
🤖 AI🌐 Web⚡ Productivity🛠️ Tools - 120.6k
Free-for-dev
A comprehensive list of SaaS, PaaS, and IaaS offerings with free tiers beneficial for DevOps and infrastructure developers.
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- 116.7k
Node.js
High-performance JavaScript runtime that enables scalable server-side development, real-time applications, and enterprise-grade systems.
🟡 JavaScript👨💻 Development🛠️ Tools - 111.0k
Rustdesk
An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer. It allows secure remote access and control while providing the flexibility and security of a self-hosted solution.
🛠️ Tools🏠 Self-Hosted🔒 Security💻 Desktop - 109.3k
Godot
Godot Engine – A comprehensive, multi-platform 2D and 3D game engine, ideal for game developers of any skill level.
👨💻 Development🎮 Game Development🛠️ Tools🧰 Framework - 103.2k
Llama.cpp
Efficient LLM inference in C/C++ for high-performance computing applications.
🤖 AI👨💻 Development🏎️ Performance🛠️ Tools - 97.6k
Immich
High performance self-hosted photo and video management solution designed to be efficient and user-friendly.
🏠 Self-Hosted🛠️ Tools⚡ Productivity🌐 Web - 97.6k
Whisper
Robust Speech Recognition via Large-Scale Weak Supervision, capable of transcribing and translating spoken language.
🤖 AI🛠️ Tools👨💻 Development🔬 Data Science - 96.6k
ComfyUI
ComfyUI is a powerful, modular diffusion model GUI, API, and backend featuring a graph/nodes-based interface. It enables users to experiment with and deploy diffusion models through an intuitive visual workflow, catering to creators and researchers alike.
🤖 AI🛠️ Tools🌐 Web - 89.0k
Bun
Bun is an incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one tool.
👨💻 Development🟡 JavaScript💚 Node.js🛠️ Tools - 87.3k
Mermaid
A tool for generating diagrams such as flowcharts, sequence diagrams, and more from text, in a similar manner to markdown syntax. This tool is particularly useful for visualizing complex processes and information in an accessible and easy-to-understand format.
📈 Visualization📚 Documentation🛠️ Tools - 87.1k
Spec-kit
A toolkit designed to simplify and accelerate Spec-Driven Development, helping developers create, manage, and implement specifications efficiently.
👨💻 Development🛠️ Tools - 80.8k
Sherlock
Sherlock is a powerful tool to hunt down social media accounts by username across numerous social networks efficiently.
🔒 Security🛠️ Tools🌐 Web - 79.8k
Vite
Next generation frontend tooling for rapid and efficient web development. It's fast and developer-friendly!
👨💻 Development🌐 Web🛠️ Tools🟡 JavaScript - 79.0k
GitHub Readme Stats
Dynamically generated GitHub stats for your README files, enhancing engagement with visual graphs and data.
👨💻 Development📈 Visualization🛠️ Tools🌐 Web - 78.9k
Hoppscotch
Open source API development ecosystem, serving as an efficient and open-source alternative to Postman and Insomnia.
👨💻 Development🔁 API🛠️ Tools - 78.0k
LocalSend
LocalSend is an open-source, cross-platform tool for sending files across devices, serving as an alternative to AirDrop.
👨💻 Development🛠️ Tools⚡ Productivity - 77.8k
RAGFlow
RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that combines advanced RAG methods with Agent capabilities, delivering a superior, context-rich experience for Large Language Models (LLMs). It enables efficient information retrieval and contextual augmentation, optimizing generative AI pipelines.
🤖 AI🔁 API🧰 Framework🛠️ Tools - 77.1k
Code-server
code-server is an open source tool that allows you to run Visual Studio Code in the browser, enabling remote development environments and access to a powerful code editor from anywhere.
👨💻 Development🌐 Web🛠️ Tools - 76.5k
Elasticsearch
Free and Open Source, Distributed, RESTful Search Engine for advanced searching and data analytics.
👨💻 Development🏎️ Performance🛠️ Tools
Frequently asked questions
What is the best open-source tools tool in 2026?
Public APIs is the most popular by GitHub stars right now. A curated list of free APIs for use in software and web development, enabling easy discovery of public API resources.
Are these tools tools free?
Yes. Every tool on this list is open source and free to use in your own projects. Many can be self-hosted.
How is this list ranked?
Tools are ranked by GitHub star count, a strong proxy for community adoption and active maintenance. Star counts are refreshed regularly.
Stay Updated!
Get notified about new tools and updates to existing ones.