License
Sigil is open-source software licensed under the GNU Affero General Public License v3.0 (AGPL-3.0).
Summary
The AGPL-3.0 is a strong copyleft license. It ensures that if you modify the software and run it as a service over a network, you must share your modifications with the community.
- Commercial use: Permitted.
- Modification: Permitted, but must be shared if distributed or run as a service.
- Distribution: Permitted under the same license.
- SaaS Rights: If you use Sigil in a web service, the source code must be available to users.
Full License Text
GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2026 Sigil Protocol Contributors.
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU Affero General Public License is a free, copyleft license for
software and other kinds of works, specifically designed to ensure
that modified versions of the software remain available to the public
even if they are run over a network.
... (Full AGPL-3.0 text available in the root LICENSE file)
You can view the full legal text in the GitHub Repository.