AVG Free Edition provides free antivirus protection for Windows XP/2000/NT/ and for windows server editions too. Installing only 30Mb of files and 4 running processes, AVG Free Edition is the smallest antivirus scanner we've tested and may well be the best choice for an older PC with severely limited system resources.antivirus, antispyware and firewall protection for Windows from the world's most trusted security company. Use the Internet with confidence in your home or small office

• Limited support for compressed/archive types
• Higher than average rate of false positives
• AVG Free Edition offers core competency in virus detection.
• Support options are limited, but this is increasingly the case with even paid-for scanners.
• Attractive interface is easy-to-use
• updates quickly and efficiently.

AVG has been certified to remove 100% of in-the-wild viruses - but results with zoo viruses are a low 81% and those same tests resulted in 11 false positives (detection of viruses in non-infected, legitimate files). Despite these drawbacks, AVG Free Edition has a long list of admirers who will be quick to point out that tests reflect a snapshot in time and may not always be indicative of future or past performance.