Discover Amazing 🛠️ Open Source Tools

Explore our curated collection of the best free open source tools for developers. Find everything you need to build, test, and ship your projects.

Tools: 1089
Categories: 52
GitHub Stars: 27.1M
Contributors: 40.3k

1.4k

Novu

Open-Source Notification Platform. Embeddable Notification Center, with E-mail, Push and Slack Integrations.

6.2k

Automerge is a powerful library that provides a JSON-like Conflict-free Replicated Data Type (CRDT) data structure, enabling concurrent modifications by different users and automatic merging of changes. It helps developers build collaborative and offline-first applications with strong consistency guarantees.

Development Framework State Tools

120

Typelabs

A typing test application inspired by MonkeyType, built with React, incorporating modern tools like shadcn and Zustand for enhanced state management and user experience.

Web React Tools

28.9k

Immer

Immer is a JavaScript library that allows you to work with immutable state by mutating the current state, simplifying state management in your applications.

Development JavaScript State Utils

9.0k

Carbon

Carbon is IBM’s open-source design system that provides reusable components, design guidelines, and tools to help teams create consistent digital experiences.

Design Component Libraries Web React

10.4k

Galaxy

Galaxy is the largest open-source UI library featuring a diverse collection of community-made, free-to-use UI components built with CSS or Tailwind CSS. Ideal for modern web development projects, it offers an extensive resource for developers and designers seeking ready-made interface elements.

Component Libraries Design Styling Web

8.1k

Ghostfolio

Open Source Wealth Management Software using Angular, NestJS, Prisma, Nx, and TypeScript for managing personal finance and investment portfolios.

E-Commerce DevOps Tools

12.4k

Nakama

A powerful distributed server designed for building social and real-time games and applications, offering features such as matchmaking, leaderboards, and chat.

Game Development API Database Development

29.8k

Consul

Consul is a distributed, highly available, and data center-aware service networking solution designed to connect and configure applications across dynamic, distributed infrastructure. It provides service discovery, configuration, and segmentation functionalities, making it essential for modern cloud-native and microservices architectures.

DevOps Architecture API Tools

23.4k

Best-of-ml-python

A curated and ranked collection of top machine learning libraries and tools for Python. Regularly updated to highlight the best open-source machine learning projects in the Python ecosystem.

Awesome Data Science Python AI

11.8k

Fastapi_mcp

Enhance your FastAPI application by exposing endpoints as Model Context Protocol (MCP) tools, complete with authentication support.

API Development Authentication

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13.3k

Rolldown

A fast and efficient Rust-based bundler for JavaScript/TypeScript with a Rollup-compatible API, optimizing build times and application performance.

Development JavaScript TypeScript Rust

12.1k

Instaloader

A tool to download pictures and videos from Instagram, capturing captions and metadata effortlessly.

Tools Utils

4.6k

Kimai

Kimai is a web-based multi-user time-tracking application suitable for freelancers, companies, and organizations to track time, generate reports, and create invoices. SaaS version available.

Productivity Web Self-Hosted

16.0k

Weaviate

Weaviate is an open-source vector database designed to store and manage both objects and vectors, enabling combined vector search with structured filtering. It offers fault tolerance, scalability, and is built as a cloud-native, developer-friendly solution for semantic search and AI-powered applications.

Database AI Development Web

30.3k

Dragonfly

Dragonfly is a modern data store designed as a high-performance, in-memory replacement for Redis and Memcached, offering superior scalability and enhanced features.

Database Performance DevOps Tools

72.2k

Screenshot-to-Code

Effortlessly convert your UI screenshots into clean code for HTML, Tailwind, React, and Vue applications.

Development Tools Utils

1.5k

Zod-to-OpenAPI

A powerful library for generating OpenAPI (Swagger) documentation from Zod schemas with ease.

API Development Documentation

527

Best of Digital Gardens

A curated and ranked list of awesome digital gardens and second brains for personal knowledge management and creativity.

Awesome Digital Garden Documentation Learning & Career

2.9k

Eslint-plugin-perfectionist

An ESLint plugin for sorting various data such as objects, imports, types, enums, JSX props, and more.

Development Code Quality Tools JavaScript

18.4k

Yaak

yaak is an intuitive desktop API client designed for organizing and executing various types of API requests, including REST, GraphQL, WebSockets, Server Sent Events, and gRPC. Its interface prioritizes usability for developers seeking efficient workflows and robust API testing support.

Development API Desktop Tools

9.5k

Rough Notation

A library to create and animate hand-drawn annotations on a web page, bringing attention to important elements stylishly.

Animation Visualization Web

19.7k

Apollo-client

🚀 A fully-featured, production-ready caching GraphQL client that seamlessly integrates with every UI framework and GraphQL server.

API Development JavaScript React

13.4k

Cua

Open-source infrastructure for training, evaluating, and benchmarking AI-powered Computer-Use Agents that control full desktop environments (macOS, Linux, Windows) with integrated sandboxes, SDKs, and reproducible evaluation tools.

AI Development Testing Tools

13.2k

Shiki

Shiki is a beautiful yet powerful syntax highlighter that makes your code stand out.

Design Tools Web

15.5k

Grav

A modern, crazy fast, ridiculously easy and amazingly powerful flat-file CMS powered by PHP, Markdown, Twig, and Symfony.

CMS Web

17.1k

Superfile

A modern, feature-rich terminal file manager with a sleek user interface for efficient navigation and file handling.

CLI Productivity Tools

21.2k

Sonic

Sonic is a fast, lightweight, and schema-less search backend. It serves as an alternative to Elasticsearch, designed to run on minimal resources, making it ideal for applications with limited memory availability. Sonic offers an efficient search and indexing mechanism at high speed while being easy to integrate.

Development DevOps Performance Database

31.0k

Mantine

A fully featured React components library with built-in accessibility and design features for building modern web applications.

Component Libraries React Accessibility Styling

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