Mozilla Public License 2.0
WeakUsed by: Firefox, Thunderbird
Description
A hybrid license that allows open-source and proprietary use while requiring changes to be shared under the same license if distributed.
Key Features
- File-level copyleft
- Patent grants
- Trademark rules
- Clear contribution guidelines
History & Context
Created by Mozilla Foundation in 1998, updated in 2012. Designed for corporate open source projects.
Compatibility
| License | Compatibility |
|---|---|
| With gpl | GPL-3.0 compatible |
| With mit | MPL-2.0 can incorporate MIT-licensed code |
| With bsd | MPL-2.0 can incorporate BSD-licensed code |
| With proprietary | Yes (with restrictions) |
License Details
Copyleft Strength
Weak
Legal Enforceability
Moderate court precedent
Notable Projects
FirefoxThunderbird
License Provisions
AttributionRequired
Source codeModified files only
Modification clauseMust share changes to original files
WarrantyDisclaimer included