HostWall it’s a program that replace HOSTS file within a version updated containing a list of dangerous addresses compiled by Safer-Networking (Spybot S&D), however it’s possible to revert and have back the original file. If you visit one of these addresses then you will be redirected to localhost for security.
AppRemover allows to totally remove antivirus and antispyware installed from partial or bad uninstallations.
Technitium MAC address changer allows to change MAC address of own network card or wireless
XDelBox it’s a tool that removes various malware.