Plate solving with astrometry.net
using the Gaia-DR2 catalogue.
Sextractor is used to find the positions
of objects in an image.
WCSTools is a package of programs and a library of
utility subroutines for setting and using the world coordinate systems (WCS) in the headers of
FITS-format images to relate image pixels to sky coordinates.
Astrometrica, primarily used for astrometry of asteroids, dwarf
planets, TNOs and other such small
bodies in the solar system. It is a Windows program which works adequately well under WINE on a Linux