Using and Anti-Virus program is a must for all Windows users. Especially if you use the internet regularly or transfer data from other computers using CDs/DVDs and flash-drives or USB drives. Since Windows operating systems are used by almost all PC users, most viruses, spyware, malware, trojans etc. are created specifically to infect Windows PCs. [...]
backup Android phone data with MobileGo a freeware application that installs on your PC and Android phone to backup contacts and media.
Piriform's Defraggler program is a decent piece of freeware that does a good job and is very fast. It also allows you to schedule your defrag jobs.