Fitswork
Fitswork is a windows image processing program, mainly designed for astronomic purposes. It contains batch processing, histogram functions, many filters, etc. Fitswork works entirely in floating-point arithmetic.
Siril
Siril is an astronomical image processing tool, able to convert, pre-process images, help aligning them automatically or manua ...
IRIS
IRIS is an astronomical images processing software.
Main features Image aligning and stacking, calibration, correction and enh ...
DeepSkyStacker
DeepSkyStacker is a freeware for astrophotographers that simplifies all the pre-processing steps of deep sky pictures. Registe ...