Apps with 'Color to Alpha' feature
- GIMP is a free program for such photo retouching, image composition and image authoring. Essentially it's the closest thing to Photoshop you can get for free.
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- Snapcraft
- FLATHUB
- PortableApps.com
- Haiku
- AmigaOS