i3 - A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
Img.vision - Image hosting & video hosting for eCommerce sellers
Xmonad - xmonad is a dynamically tiling X11 window manager that is written and configured in Haskell.
UploadHouse - Thumbnail and resize your photos and images
awesome - A dynamic window manager for the X Window System developed in the C and Lua programming languages.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.