RosterMaker X for Mac

From RBS Software:

Allows you to create army lists for Warhammer 40k. This is only a beta version, and does not contain any actual data files with unit information. Future versions will support more than just Warhammer 40k, but users will have to create their own data files. It is mainly to keep your army list organized for printing and point totaling purposes.
This program is in no way a challenge to Games Workshop's Intellectual property, and that is the reason for not including data files.