Drawing, graphics conversion, software development, administration.
Easy-to-use command line tool for images
Command line tool for scaling and denoising images
Convert images to Ascii Art, with a lot of options and drawing tools
angif fork with transparency layers (proof of concept implementation)
Merge image files into a single Windows icon (.ico) file.
Converts AtariST images (.neo, .pi1, .pi2, .pi3) to gifs (using gd).