CPU-Z is a freeware utility that gathers information on some of the main devices of your system. CPU-Z does not need to be installed, just unzip the files in a directory and run the .exe. In order to remove the program, just delete the files. The program does not copy any file in any Windows directory, nor write to the registry.
Maxthon Internet Browser software is a powerful tabbed browser with a highly customizable interface. It is based on the Internet Explorer browser engine (your most likely current web browser) which means that what works in the IE browser will work the same in Maxthon tabbed browser but with many additional efficient features: 
Thunderbird is a great email client from the same people who brought you the Firefox browser. 
AVG Anti-Virus Free Edition is trusted antivirus and antispyware protection for Windows available to download for free. In addition, the new included LinkScanner® Active Surf-Shield checks web pages for threats at the only time that matters - when you're about to click that link. 
