When it comes to system junk files cleaning software on Windows, many users will recommend Piriform's CCleaner first - which has almost become one of must-have tools for any computer. CCleaner is free, small, has multi-language interface, and runs fast. Especially, it is fairly stable and safe to use, even the novice computer user won't encounter a problem due to misuse. CCleaner for Mac is a free system useless files cleaner, system optimizer and privacy protector specially designed and developed for Mac users. It is actually the Mac version of CCleaner.

Using general methods (via the Programs and Features in Control Panel, for example) to uninstall programs can not achieve thorough clear. In other words, there are still a lot of software files and registry entries remained in the system after uninstallation, which waste your disk space and make the system performance worse and worse.

Should I Remove It? is a lightweight freeware helping you decide which applications are safe to uninstall - this is very practical, meaningful and helpful. It determines whether some software is no-good and can be safely removed based on its online grading database (ranked by the common crowds and technical experts), which means its accuracy can be trusted.

Your Uninstaller! PRO is an intelligent uninstaller developed by URSoft, with which you can easily manage your applications just like using the recycle bin. It is not the most powerful one I have known, but it's worth a try for primary computer users.

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.