Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!
OpenCats looks like a great applicant tracking system!
http://www.opencats.org/
http://forums.opencats.org/
http://opencats-documentation.readthedocs.io/en/latest/
http://demo.opencats.org/index.php?m=companies
https://github.com/opencats/OpenCATS/releases/