TreeSize Free - Every hard disk is too small if you just wait long enough. TreeSize Free tells you where precious space has gone to.
Openoffice - OpenOffice.org is both an open-source product and a project. The product is a multi platform office productivity suite. It includes desktop applications such as a word processor, a spreadsheet program, a presentation manager, and a drawing program, with a user interface and feature set similar to those of other office suites.
Adobe Reader - Easily view, print, and collaborate on PDF files with free Adobe Reader 9 software.
Adobe Flash Player - Flash Player is a lightweight, highly expressive client runtime that delivers powerful and consistent user experiences across major operating systems, browsers, mobile phones, and devices. Adobe Flash Player software is a cross-platform browser plug-in that delivers breakthrough web experiences and is installed on more than 98% of Internet-connected desktops.
Java - Java for Windows - Firefox/Mozilla. Older versions of JAVA have been know to be susceptible to trojans.
CCleaner - CCleaner is a freeware system optimization, privacy and cleaning tool. It removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space.
McAfee FreeScan - McAfee FreeScan is a great virus scanner using the award-winning McAfee Scan Engine. Uses ActiveX component.
BitDefende - An online version of the BitDefender software. Will scan your drives, files, and boot sector. Works only with Internet Explorer.
Eset - Eset Online Malware scanner. With just an acceptance of ESET™ TOS, you can scan your PC for known Malware including Viruses, Worms, Trojans, Phishing, and Spyware.
NanoScan - NanoScan is an new and fast online virus scanner developed by Panda Software. It takes only 1-2 minutes to scan your whole PC. NanoScan is a free online solution that detects different kind of Malware that could be running on the computer.
Avast - Online version of popular Antivirus software Avast will scan individual files of up to 512kb in size.
Housecall - Scans for Viruses and Malware. It also scans for vulnerabilities and and fixes them to prevent re-infestation.
Panda ActiveScan 2.0 - Searches your system for Worms, Viruses, Trojans and more after a small Active X download.
Microsoft OneCare - Use this free protection scan to check for and remove Viruses, Spyware, and other potentially unwanted software and to find vulnerabilities in your Internet connection.
Malwarebytes - Malwarebytes’ Anti-Malware (MBAM) is free to use to detect and remove Malware. If purchased, the scanner will keep malware off computers
Ewido - With the help of this online scanner you can scan and clean your computer from Malware without having to install additional software on your computer.
Microsoft Malicious Software Removal Tool - The Microsoft Windows Malicious Software Removal Tool checks computers running Windows Vista, Windows XP, Windows 2000, and Windows Server 2003 for infections by specific, prevalent malicious software—including Blaster, Sasser, and Mydoom—and helps remove any infection found.
Adaware - Free version of popular adware removal software.