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 (297)
AI coding assistant skill (Claude Code, Codex, OpenCode, OpenClaw). Turn any folder of code, docs, papers, or images into a queryable knowledge graph
Delightful JavaScript testing
Open source Slack/Teams alternative
AI-powered job search system built on Claude Code. 14 skill modes, Go dashboard, PDF generation, batch processing.
Open source IDE for exploring and testing APIs
TypeScript-first schema validation with type inference
Open source fullstack Next.js framework with backend superpowers
Extremely fast bundler for the web
Express-inspired web framework for Go
A new type of shell
Open source notification infrastructure
Extremely fast DataFrame query engine
Analytical in-process SQL database
Enhanced ChatGPT clone with multiple AI providers
Privacy-focused website analytics
TypeScript & JavaScript ORM
Smarter cd command for all major shells
Declarative, efficient JS library for building UIs
Fast, disk-space efficient package manager
React framework for internal tools and admin panels
This guide is for informational purposes only and does not constitute legal advice. For licensing decisions in commercial products, consult a qualified attorney.