Very permissive license allowing almost unrestricted reuse.

Strong copyleft license that requires sharing source including server-side code.

Permissive license with patent grant and conditions for redistribution.

Copyleft license requiring derivative works to also be GPL-licensed.

Updated version of GPL-2.0 with added protection against tivoization and patents.

Weak copyleft license; modified files must be open, but can be part of proprietary code.