Open-source licenses approved by the Open Source Initiative .
Open-source licenses that are free. This excludes the licenses from the OSI-APPROVED-NONFREE set. We keep Artistic because Debian considers it DFSG-free.
Licenses approved by the Open Source Initiative that the FSF lists as nonfree: 
|NOSA||NASA Open Source Agreement 1.3||bug #908499|
|Watcom-1.0||The Sybase Open Source Licence||bug #908499|