Apps with 'Adjustment Layers' feature
- Krita is a professional Free and open source (FOSS) painting program. It is made by artists that want to see affordable art tools for everyone withith concept art, texture and matte painters, illustrations and comics.
- Photoline is a professional image editor which offers creatives a mostly non-destructive workflow for 8/16/32bpc image processing and compositing in RGB, CMYK, and Lab modes.
Full vector editing, DTP features, and a HSV/HIS workflow are supported. .