RakhniDecryptor is a general purpose ransomware decryptor created by Kaspersky Labs. Instead of creating a separate decryptor for each ransomware infection, they created on decryptor that can handle a variety of different families.
The Kaspersky Lab Products Remover will remove Kaspersky Lab products from your computer when they are unable to be removed normally via the Windows control panel.
TDSSKiller is a utility created by Kaspersky Labs that is designed to remove the TDSS rootkit. This rootkit is know under other names such as Rootkit.Win32.TDSS, Tidserv, TDSServ, and Alureon. TDSSKiller will also attempt to remove other rootkits such as the ZeroAccess or ZeroAccess rootkit if it is detected.