I just started working as a technician at a PC repair shop. For now I have to adhere to apps that worked well for the company to clean customers' PC's. These apps are: AdwCleaner, MalWare Bytes, HitMan Pro, and CCleaner of course. However, they still leave crap in startup and don't uninstall some DriverUpdate or similar spyware. The apps I use on my personal PC are: CCleaner + CCEnhancer, Josh Cell UnCleaner 1.7, jv16 PowerTools 2014. Which portable anti-spyware apps would you recommend for a USB flash drive? Portable, but fully functional Anti-Virus like AVAST or AVG would be good if they can be portable. Maybe there are some AIO Spyware and Virus cleaners (portable)? What other apps would you recommend to optimize a customer's PC that runs Windows Vista, 7, and 8.1? PC's we deal with are usually slow - sub 4GB of RAM, some Intel i3's, but others older than i3's, no SSD's, We have to stay away from ClassicShell and StartIsBack because became confused since they memorized how to do things with Windows 8.1 Metro UI and having the Start Button back messed up their... coordination LOL! Also - if I were to get a... erm... a fully working, activated, but not erm... registered portable apps then they would have to leave NO TRACE of being run on customer's PC. I guess CCleaner would take care of Windows Log, which could store .exe activity information..?? There are some other useful apps I already picked up from around here - C++ Runtime installer that sets up C++ from 2005 to 2013! That is something good to install on a fresh Windows 7/8/8.1 installation along with Adobe Reader, Flash Player, MPC-HC, and a few other apps. Please recommend! Thanks!