Website: http://fityk.nieto.pl
Wiki: https://github.com/wojdyr/fityk/wiki
Code: https://github.com/wojdyr/fityk
Manual: http://fityk.readthedocs.org/en/latest/
Discussions: http://groups.google.com/group/fityk-users/
Building from Source: Read the INSTALL file
Citing in academic papers: J. Appl. Cryst. 43, 1126 (2010) (reprint)
Contact: wojdyr@gmail.com