TDSSKiller is described as 'Kaspersky Lab has developed the TDSSKiller utility that allows removing rootkits' and is an app in the Security & Privacy category. There are five alternatives to TDSSKiller for Windows, Linux, Online / Web-based and PortableApps.com. The best alternative is Chkrootkit, which is both free and Open Source. Other great apps like TDSSKiller are GMER (Free), McAfee Labs Stinger (Free), Sophos Virus Removal Tool (Free) and RootkitRevealer (Free).
RootkitRevealer is an advanced rootkit detection utility. It runs on Windows NT 4 and higher and its output lists Registry and file system API discrepancies that may indicate the presence of a user-mode or kernel-mode rootkit.