CVS:

Cyclic Software Windows NT cvs server WinCvs OpenAvenue / CVSHome CVSSCC CWCVS abCVS

DevStudio:

WndTabs (Partner) Workspace Whiz! (Partner) Visual Assist WorkspaceEx CodeProject CodeGuru Useful Managers

Other:

ANYSOFT Consultancy Near Earth Asteroid Rendezvous Mission SETI@Home