Result
You want standard open source.
Free for anyone, for any purpose, forever, with no exceptions — that's exactly what choosealicense.com is built for. A few places to start there:
- MIT License — Short, permissive, almost no conditions.
- Apache License 2.0 — Permissive, with an explicit patent grant.
- GNU General Public License v3.0 — Strong copyleft — derivatives must ship under the same license.