Pixelitor

Pixelitor is a desktop image editor for creating and editing images on Windows, macOS, and Linux. It handles layered compositions complete with layer masks and text layers, making it well suited to both photo editing and from-scratch graphics work.

Its standout feature is a library of more than 110 image filters and color adjustments, ranging from everyday corrections to creative and distortion effects. Multiple undo lets you step back through your changes and experiment without fear of losing work.

Alongside pixel-level editing, Pixelitor supports adjustment workflows that keep edits flexible as you refine an image. It is free and open source software under the GPL-3.0 license.