CCleaner is not the best system junk files and registry cleaning tool, but on balance it has not bad cleaning effect and less negative impacts to system stability. So it is a matter of course that CCleaner has become one of the must-have tools for PC users.
ESET Product Activator (EPA for short) is a universal and automatic lifetime activator (works in Windows Safe Mode) for all main ESET security products (ENA/ESS/EES) on any Windows platform, written by Nikko (its use tutorial was made by Nymphish). The activation is permanent, and we can just see it as an infinite, unlimited trial resetting tool!
The version names of Norton's security products are really mussy and ruleless (they just change them at will, is this for the purpose of confusing crackers?). But this does make too many users feel confused and puzzled (is my Norton product bought just a few days ago out of date?).
Bitdefender Activator Ultimate All In One Toolkit (also called Bitdefender TR) is a universal one-click activation/reset toolkit for all security products (Antivirus Pro, Internet security and Total Security) of Bitdefender 2012/2013/2014/2015 and older versions. Thanks for Khalil Zeina (CYBERBOOM)'s work.