Comodo Antivirus
Comodo Antivirus provides real-time scanning, where it resides in
memory and checks your programs for viruses as they are run, as well
as on-demand scanning for viruses. You can also schedule your scans.
It automatically updates itself through the internet. Note that you
have to activate your copy as well as supply your email address to
get and use this software.
Clam AntiVirus
ClamAV is a free command line antivirus scanner for Unix systems.
You can also integrate it with your mail server for scanning your
email messages and attachments. It is able to scan inside archives
like RAR archives, Zip archives, Gzip and Bzip2 archives (that is,
it has unpacking engines for those types of compressed archives).
If you are a programmer, you can even integrate the antivirus scanner
into your own programs. This free antivirus program comes with source
code that is released under the GNU General Public License. Prebuilt
binary packages are available for numerous Linux distributions (Debian,
RedHat / Fedora, PLD Linux, Mandrake), Microsoft Windows, FreeBSD,
OpenBSD, AIX, OSF and Solaris 8 (Sparc).
AntiVir Personal Edition
AntiVir Personal Edition is a free antivirus program for Windows computers.
It has a resident component that monitors file movements for signs
of viruses. It also allows you to scan your computer and repair files
that have been infected. The program comes with a facility to automatically
check the AntiVir website for updates to the virus definitions and
download them. Updates are free.
AVG Anti-Virus
The AVG Anti-Virus software comprises a resident program that works
in the background, an email scanner (checks your email for viruses),
an on-demand scanner (eg, you invoke it to scan your system), the
ability to repair certain infected files, and automatic updates of
the virus definitions.
F-Prot Antivirus
for Linux, FreeBSD, OpenBSD, NetBSD and DOS
F-Prot Antivirus for DOS, Linux and BSD (FreeBSD, OpenBSD and NetBSD)
is free for personal use on personal workstations. (Note: these are
separate downloads; scroll down on their page to find the link appropriate
for your system. Also note that the Windows and Solaris versions are
not free.)
avast! Home Edition
avast! Home Edition is free for home users on non-commercial computers.
You have to register your copy and supply them your email address
(get
a free email address here if you wish) so that they can send you
a license key to activate the program.
BitDefender Free Edition
BitDefender Free Edition is a free antivirus program that includes
on demand scanning, scheduled scanning, automatic and manual updates
of antivirus definitions, etc. There appear to be versions available
for Windows, MSDOS, Linux, Windows CE, and Palm.