for stacking multiple exposures together into one image
guiding software to correct mount errors for longer exposures
free planetary stacker (OSx)
control your digi cam
Free sequence capture control for Mac/PC + lots of DSLRs.
Remote imaging software
For calculating all things related to CCD imaging (FOV/pixel size/etc)
AstroImager is a powerful, but easy to use image capture application for the astrophotography. (OSX)
performs Lucy-Richardson deconvolution, unsharp masking, brightness normalization and tone curve adjustment.
Plug-in for for Photoshop
free software that lets you input your coordinates and will show you when objects will be up and at what time.
planetary video processing/stacking software
Planetary imaging pre-processor, good for shaving down file sizes with cropped, stabilized planetary shots
image capture suite for astrophotography
A piece of software that is meant to be used to process images from MicroObservatory.org, it's not really good for much else, but it does a damned good job of teaching people the basics of processing RGB FITS data.
For those that use Gemini controlled mounts
HLVG is a chromatic noise reduction tool that attempts to remove green noise and the green casts such noise may cause in some images.
PC and Mac Compatible (works with all modern full Photoshop versions)
planetary video stacking software
mosaic/composite image stitching software
sed for one-click image stitching with border feathering & Histogram
Flexible image capturing software, records in raw, uncompressed files
periodic error correction, polar alignment and backlash using your CCD Camera or Webcam
The software that comes with sBig CCD cameras also available separately.
Stacking software for CCD images
planetary imaging application intended mainly for Linux
BackyardEOS is software tailor made to control your Canon DSLR camera. It is purposely built with astro-photography in mind.