Firefox (GNU General Public License)
It is a weak copyleft license, characterized as a middle ground between permissive software licenses and the GNU General Public License (GPL), that seeks to balance the concerns of proprietary and open-sourceopen-sourceOpen-source software (OSS) is computer software that is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software and its source code to anyone and for any purpose. Open-source software may be developed in a c
Can I use Mozilla Public License?
Nothing. Like all other free and open source software, software available under the MPL is available for anyone (including individuals and companies) to use for any purpose.
MPL 2.0 FAQ - Mozilla
Is Mozilla Public License free?
Mozilla is the custodian of the Mozilla Public License ("MPL"), an open source/free software license. The current version of the license is MPL 2.0 (html | plain text).
Mozilla Public Licence
Many of the most common free-software licenses, especially the permissive licenses, such as the original MIT/X license, BSD licenses (in the three-clause and two-clause forms, though not the original four-clause form), MPL 2.0, and LGPL, are GPL-compatible.
License compatibility - Wikipedia