Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious softwareand its free download from Microsoft.

AVG Anti-Virus free provides you with basic antivirus and antispyware protection for Windows.

Avast! Home Edition  is FREE to use but it is necessary to register before the end of the initial 60 day trial period. Following the registration you will receive by e-mail a license key valid for a period of 1 year.

Spybot - Search & Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications.

Avira AntiVir Personal - Free Antivirus protects your computer against dangerous viruses, worms, Trojans and costly dialers.

CrashPlan - Free, easy, automatic data backup
Truly dependable backup means backing up to multiple locations - not just online - which until now could be complicated. CrashPlan automatically backs up to multiple destinations for FREE!
CrashPlan's groundbreaking social backup concept makes it easy to back up to computers belonging to your network of friends or family for offsite backup, in addition to using your own computers and external drives for onsite backup. CrashPlan works on all your computers, so you don't have to worry about compatibility either.
CrashPlan is true backup; uncomplicated, reliable and even a little fun.

CrashPlan+ - Flexible data protection
CrashPlan+ gives you all the protection of CrashPlan, plus the added benefit of secure cloud storage to CrashPlan Central for your personal files and features like continuous, minute-by-minute backup.
Multiple backup sets let you back up different groups of files to different destinations with different settings, so you can back up personal files to the cloud and non-personal files everywhere else. In addition, CrashPlan+ features expanded controls for managing your backups and your files are secured with even stronger 448-bit encryption.
CrashPlan Central is the cloud backup destination for CrashPlan+, providing online storage for your personal files in our secure data centers located around the world. It is instantly available as a backup destination after you install, and is available 24/7 for backing up and restoring files. Make cloud backup for your personal files an integral part of your multiple destination backup strategy with CrashPlan+.

CrashPlan PRO - Only CrashPlan PRO combines onsite, offsite and cloud backup in a people friendly, enterprise-tough solution.

SpiceWorks can help you easily inventory and monitor your network. It even comes with a built-in help desk that can receive tickets via email, and customizable reports that you can easily run and export. It doesn’t take long to set up (about 5 minutes), has a simple interface, and doesn’t use agents to discover your machines.