Krita is a free, open-source alternative to Adobe Photoshop. It can be used without subscription fees — and its source code is open for anyone to inspect, modify and self-host.
Painting-focused editor loved by digital artists and illustrators. Its license (GPL-3.0) is a copyleft license: you can use, study and modify it freely, and derivative works must remain open-source under the same terms. Commercial use is allowed.
What switching gets you
No subscription, no per-seat pricing — free forever, for individuals and companies alike.
Your data stays with you: it can run locally or on your own servers, with no vendor lock-in.
The source code is public — auditable, extensible and maintained in the open by its community.