http://www.astrosurf.com/astropc
http://3demi.net/astro/qastrocam/doc/
http://www.astrosurf.com/buil
http://avi2bmp.free.fr
http://www.astrostack.com/index.html
http://aberrator.astronomy.net/registax
http://www.astrosnap.com
http://www.teleauto.org/indexEn.php