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Qubes OS License
Qubes is a compilation of software packages, each under its own license. The compilation is made available under the GNU General Public License version 2.
The full text of the GPL v2 license can be found here.
Parts of the Qubes OS under proprietary license
Some software produced by the Qubes Project is proprietary software of Invisible Things Lab. Those parts are not distributed as part of the Qubes OS installation ISOs, but can be downloaded separately.
The following software is licensed under a proprietary license:
- Qubes Windows Support Tools
Note on rights to double-licensing of the Qubes code
Invisible Things Lab (ITL), who has funded and run the Qubes project since the beginning, and who has contributed majority of Qubes-specific code (specifically: core-*, gui-*, and qubes-* repositories) would like to have a right to redistribute parts of this code under proprietary licenses. This is especially important for Qubes R3 and later, where the new architecture allows the creation of many editions of Qubes, using different hypervisors, some of which might not be open source. That's why we ask every developer who contributes code to Qubes project to grant ITL permission to reuse the code under a different license, and to express this consent by including the standard signed-off line in the commit.