This is a non-exhaustive list of rootkits available in the market:
- Horse Pill
- Grayfish
- Windows kernel rootkit
- Sirefef
- Necurs
- WingBird Rootkit
- Avatar
- Azazel
- ZeroAccess
- Alureon
List of Rootkits
Horse Pill
Linux kernel rootkit.
Grayfish
Windows kernel rootkit
Sirefef
Necurs
http://www.f-secure.com
WingBird Rootkit
It is backdoor that appears to be a version of commercial software FinFisher.
Avatar
https://www.welivesecurity.com/2013/05/01/mysterious-avatar-rootkit-with-api-sdk-and-yahoo-groups-for-cc-communication/
Azazel
https://github.com/chokepoint/azazel
ZeroAccess
Alureon
https://en.wikipedia.org/wiki/Alureon