retropaint

RetroPaint

 1.0
Free   
2

A simple application that can convert regular BMP pictures to the colors of retro computers like ZX Spectrum, Atari, Commodore 64 or Apple II 1977

converseen

Converseen

 0.9.9.1
Free (Open Source)   
1

With this program you can convert a lot of images at same time in packs

retroeditor
Free   
1

Graphic editor for creating retro effects