Lynkeos is an astronomical webcam image processing software for OS X.
ProStack - a platform for image processing and analysis
Gigapixel GPU accelerated radio interferometric imager
General data-reduction tool for fiber-fed integral-field spectrographs
AstroCTC - Linux astronomy software for Planetary and Lunar image c
An application for eclipse chasers, by an eclipse chaser.
Astronomical Image Solver with Telescope Pointing
Astronomical object/structure detection from 1D and 2D data sets.
video align tool for astrophotography
Siril is an astronomical image processing software for Linux.