These are some of the best, completely free antivirus software and add-ons available on the internet for download.
Avast Home Edition: This is a completely free but one of the best antivirus applications available anywhere, which is intended for non-commercial use. You can download and register it on their website (www.avast.com) free of cost. The Avast Home Edition features an On Demand Scanner, On Access Scanner (to protect e-mail clients, instant messengers, etc). It also has P2P protection and a lightweight firewall. The NNTP Scanner can scan all Usenet Newsgroup traffic and all operations with files on PC. It also has a real-time protection feature which is rather powerful. Program and database updates are also incredibly fast.
602LAN Suite (http://www.software602.com/products/ls/): This secure mail server has an inbuilt antivirus and anti-spam guard. The firewall is meant to control internet sharing and is equipped with NAT and Web content filter proxy. It also features standards based SSL SMTP/POP3 e-mail server that enables encrypted communication, junk mail protection and an integrated fax server. Access to the Web mail client, shared address book, remote...