Mozilla Public License
The Mozilla Public License is a free and open-source weak copyleft license for most Mozilla Foundation software such as Firefox and Thunderbird. Wikipedia
Copyleft: Yes, file-based
Author: Mozilla Foundation
GPL compatible: 2.0 and later: Yes (by default, unless marked as "Incompatible With Secondary Licenses"); 1.1: No
Latest version: 2.0
SPDX identifier: MPL-2.0; MPL-1.1; MPL-1.0; (see list for more)