Open Source License Generator
Generate a correct LICENSE file for MIT, Apache-2.0, or GPL-3.0 with your name and year.
Generate MIT, Apache-2.0 and GPL-3.0 license files instantly. Free open source license generator with your name and year.
Calculator Inputs
About OSS License
Generate a correct LICENSE file for MIT, Apache-2.0, or GPL-3.0 with your name and year.
Pick a license, add the holder and year, and get the file text. MIT is maximally permissive; Apache adds a patent grant; GPL requires derivatives stay open. Apache and GPL outputs include pointers to fetch the full canonical text.
License choice has real consequences — this tool formats text, it does not give legal advice. Everything runs in your browser.
Where it is used
New open-source repos, publishing packages, and fixing "no license" warnings on GitHub.
How to use the OSS License
- License — enter the value.
- Copyright Holder — enter the value (e.g. Jane Doe).
- Year — enter the value (e.g. 2026).
- Calculate — press the Calculate button to see the result instantly above.
Formula
Canonical license texts with holder + year interpolated.
Examples
Example
Frequently Asked Questions
- MIT vs Apache vs GPL?
- MIT: do anything, keep notice. Apache: same plus patent protection. GPL: derivatives must stay open-source too.
- Do I need the full text for Apache/GPL?
- Yes — unlike MIT, they reference a canonical full text you must include. The output tells you exactly what to fetch.
- Can I change licenses later?
- Only with consent of all copyright holders (every contributor). Get contributor agreements early if relicensing is plausible.