GIMP

GPL-3.0 · Copyleft license

GIMP 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.

License
GPL-3.0
Replaces
1 commercial tools
Official website ↗

About

The classic free image editor with layers, masks, filters and scripting. 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

An open-source alternative to

Adobe Photoshop

Other alternatives worth a look

KritaPainting-focused editor loved by digital artists and illustrators.PhotopeaBrowser-based editor that opens PSD files — free, though not open source.