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 (397)
Web framework built on Web Standards
GitHub's official MCP Server
Build system optimized for JS/TS monorepos
Feature-rich ORM for Node.js
Open source LLM engineering platform
Container runtimes on macOS with minimal setup
Monorepo platform for developers and AI agents
Scalable load tests in plain Python
Find secrets with Gitleaks
Memory engine and app that is extremely fast, scalable. The Memory API for the AI era.
Find and fix problems in your JavaScript code
Array framework for Apple silicon
ES module bundler
Serverless Functions Made Simple
OpenAPI-generated API documentation
你想蒸馏的下一个员工，何必是同事。蒸馏任何人的思维方式——心智模型、决策启发式、表达DNA。Distill how anyone thinks.
The original CI/CD automation server
Nix Packages collection & NixOS
DeepSeek-native AI coding agent for your terminal. Engineered around prefix-cache stability — leave it running.
This guide is for informational purposes only and does not constitute legal advice. For licensing decisions in commercial products, consult a qualified attorney.