A collective list of free APIs

An Open Source Machine Learning Framework for Everyone

Flutter makes it easy and fast to build beautiful apps for mobile and beyond

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

Python tool for converting files and office documents to Markdown.

LLM inference in C/C++

A utility-first CSS framework for rapid UI development.

The Web framework for perfectionists with deadlines.

Animation engine for explanatory math videos

An extremely fast Python package and project manager, written in Rust.

🙌 OpenHands: AI-Driven Development

The web framework for content-driven websites. ⭐️ Star to support our work!

Open Source realtime backend in 1 file

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

🐹 Deep clean and optimize your Mac.

An extremely fast Python linter and code formatter, written in Rust.

C++ based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

Streamlit — A faster way to build and share data apps.

A type-safe HTTP client for Android and the JVM

Build and share delightful machine learning apps, all in Python. 🌟 Star to support our work!

The uncompromising Python code formatter

🚀 The easiest way to automate building and releasing your iOS and Android apps

A powerful 🚀 Android chart view / graph view library, supporting line- bar- pie- radar- bubble- and candlestick charts as well as scaling, panning and animations.

💥 Blazing fast terminal file manager written in Rust, based on async I/O.

A Python library for extracting structured information from unstructured text using LLMs with precise source grounding and interactive visualization.

A smarter cd command. Supports all major shells.

An image loading and caching library for Android focused on smooth scrolling

The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

Unlock your displays on your Mac! Flexible HiDPI scaling, XDR/HDR extra brightness, virtual screens, DDC control, extra dimming, PIP/streaming, EDID override and lots more!

A memory leak detection library for Android.