Avira AntiRootkit Protection recognizes active rootkits. However, there are rootkits, which are used legally in programs. Avira AntiRootkit Protection also detects those. Please note that using reported rootkits is at your own risk and it can cause program errors.
With Avira AntiRootkit Tool you'll be able to view all the rootkits that are active on your system.
MajorGeeks
Internode
