ImageJ

Open, process, analyze, edit and print scientific images via saved files in various popular formats

Simple RAW to JPEG/TIFF converter for images shot with a Canon EOS camera

Photo editing software for Windows Vista, allows for many different changes to a photo

Easily combine all of the photos from your smartphone into an impressive collage with this program

Photo editing software that includes a lot of fun effects and options

An unofficial client for Instagram that allows you to manage your Instagram account directly from your desktop