Weak on Your License

GNU Lesser General Public License v3.0

Mon, 01 Jan 0001 00:00:00 +0000

LGPL-3.0 is a “library” variant of GPL-3.0. If you modify the LGPL-3.0 library itself, your modifications must be released under LGPL-3.0. If you just use the library — link to it, call its APIs — your own code can stay under any license, even proprietary.

LGPL-3.0 is a good fit for reusable libraries where you want modifications to the library itself to stay open, but you are fine with the library being called from closed-source code.

Mozilla Public License 2.0

Mon, 01 Jan 0001 00:00:00 +0000

MPL-2.0 applies copyleft at the file level: if you modify an MPL-2.0 file, that file stays under MPL-2.0, but new files can be under a different license. This makes it easier to combine MPL-2.0 code with proprietary code than GPL or LGPL.

It includes an explicit patent grant and retaliation clause. It is compatible with both GPL and Apache-style licenses, which makes MPL-2.0 a common choice for projects that want some copyleft protection without scaring off commercial users.