BrightStor High-Availability Manager
Computer Associates - http://www.ca.com
Double-Take for Windows 2000/NT 4.1
NSI Software - http://www.nsisoftware.com
Legato Octopus for Windows NT and 2000 4.2
Legato Systems - http://www.legato.com/products/replistor
VERITAS Cluster Server 2.0 for Windows 2000
VERITAS Software - http://www.veritas.com
LifeKeeper for Windows 2000 4.0
SteelEye Technology - http://www.steeleye.com