ale -
0.8.11.2 (ALE (Anti-Lamenessing Engine) is an image-processing program used for tasks such as image mosaicking, super-resolution, deblurring, noise reduction, anti-aliasing, and scene reconstruction.)
gscan2pdf -
0.9.27 (Create PDF of selected pages with File/Save PDF)
mumbles -
0.4.1 (A modern notification system, similar to libnotify or Growl on OSX)
sane-backends -
9999 (Scanner Access Now Easy - Backends)
xmorph -
20090929 (Library that implements digital image warping, known as morphing, along with GUIs.)