MIT License
Do whatever you want. Just keep the copyright notice.
Commercial use
✓ Yes
Modify
✓ Yes
Distribute
✓ Yes
Must open source changes
✗ No
Must attribute
✓ Yes
Patent grant
✗ No
What this license means
The MIT License is the most popular open source license. It lets you use, copy, modify, merge, publish, distribute, sublicense, and sell the software — with essentially no restrictions. The only requirement is that you include the original copyright notice and license text in any copy or substantial portion of the software.
When you encounter this license
Use MIT-licensed tools freely in any project — personal, commercial, proprietary. You can bundle it, modify it, sell products built with it. Just keep the license file somewhere in your project. This is the easiest license to work with.
Watch out for
No patent grant — if the software implements a patented algorithm, the MIT license doesn't protect you from patent claims. No warranty, no liability — standard for all OSS licenses.
Tools using MIT License (608)
The best-benchmarked open-source AI memory system. And it's free.
The highest-scoring AI memory system ever benchmarked. And it's free.
Framework for orchestrating autonomous AI agents
Web application framework
Small, fast, scalable bearbones state management
Self-hosted Git service
Independent publishing platform with memberships and newsletters
AI generates editable, beautifully designed PPTX from any document, no design skills needed | 15 examples, 229 pages
Explore layers in a Docker image
Wrap Gemini CLI, Antigravity, ChatGPT Codex, Claude Code, Qwen Code, iFlow as an OpenAI/Gemini/Claude/Codex compatible API service, allowing you to enjoy the free Gemini 2.5 Pro, GPT 5, Claude, Qwen model through API
Opinionated code formatter
Platform for universal React apps
Fast, reliable browser testing
🤖 Powerful asynchronous state management, server-state utilities and data fetching for the web. TS/JS, React Query, Solid Query, Svelte Query and Vue Query.
Extremely fast Python linter and formatter, written in Rust
Open-source AI engine, run any model locally
Open source IDE for exploring and testing APIs
Installable GitHub library of 1,935+ agentic skills for Claude Code, Cursor, Codex CLI, Autohand Code, Gemini CLI, Antigravity, and more. Includes specialized plugins, installer CLI, bundles, workflows, and official/community skill collections.
Open source Slack/Teams alternative
Delightful JavaScript testing
This guide is for informational purposes only and does not constitute legal advice. For licensing decisions in commercial products, consult a qualified attorney.