ClamWin Free Antivirus is based on ClamAV engine and uses GNU General Public License by the Free Software Foundation, and is free (as in freedom) software.
Yep it is. From the site I linked.
I did the same yep same Clam I never used it but I am sure it is good as most Unix, Linux systems use it . Here is one I recommend to most people as you boot it up without starting your system that way it can find and delete files also has many other uses such as reset Win passwords and yes it does work lol.
Short list of some things Trinity does.
-easily reset windows passwords with the improved winpass tool
-simple and easy menu interface
-5 different virusscan products integrated in a single uniform commandline with online update capability
-full ntfs write support thanks to ntfs-3g
-winclean, a utility that cleans up all sorts of unnecessary temporary files on your computer.
-clone computers over the network via multicast.
-wide range of hardware support (kernel 2.6.35 )
-contributed backup utility called “pi”, to automate local machine backups
-easy script to find and mount all local filesystems
-self update capability to include and update all virusscanners + local changes you made to TRK.
-full proxyserver support.
-run a samba fileserver (windows like filesharing)
-run a ssh server
-recovery and undeletion of files with utilities and procedures
-recovery of lost partitions
-evacuation of dying disks
-full read/write and rpm support
-UTF-8 international character support (select keyboard language from the scrollable textmenu at startup)
-2 rootkit detection uitilities
-most software updated to recent versions
-literally thousands of changes and bugfixes since version 3.3
-elaborated documentation, including manpages for all commands (also TRK ‘s own)
Here is something new I just found AVIRA Anti Virus. I am downloading now it comes as an ISO or a Windows EXE file.
Thought it might interest you.
http://www.avira.com/en/support-download-avira-antivir-rescue-system