Friday, November 21, 2014
A free online (Flash) app for creating pixel art.
The famous open source alternative to Photoshop.
See this note for using GIMP as a pixel art editor.
A free powerful image and photo editing software.
A bitmap paint program specialized in 256-color drawing.
Source Code (GNU GPL): https://code.google.com/p/grafx2/
A painting program to create pixel art and manipulate digital photos.
Source Code (GNU GPL): https://github.com/wjaguar/mtPaint
A open source (but not 'free') pixel art editor for Mac OS X.
Source Code: https://github.com/Pixen/Pixen
An open source animated sprite editor & pixel art tool.
Source Code (GNU GPL): https://github.com/aseprite/aseprite/
Note: Aseprite is open source but not 'free' since donation is required for downloading the pre-built binaries. However, it is open source so you can compile for the binary by yourself.