The GNU Image Manipulation Program, or GIMP, is a raster graphics editor used to process digital graphics and photographs. (GPL)
Linux - FreeBSD - Windows - macOS
LazPaint is a free cross-platform image editor with raster and vector layers. It supports the OpenRaster format so it can interoperate with MyPaint, Gimp and Krita. (GPL)
Linux - Windows - macOS
mtPaint is a painting program designed for creating icons and pixel-based artwork. (GPL)
Linux - FreeBSD - Windows
Paint.NET is an open source, raster graphics editing program for Windows, developed on the .NET Framework. (MIT)
Windows
Tux Paint is a free, award-winning drawing program for children ages 3 to 12. (GPL)
Linux - FreeBSD - Windows - macOS
5 applications