ClamTK - a simple graphical interface of the ClamAV antivirus (Clam Antivirus). It is designed to be an easy-to-use, lightweight on-demand scanner for Linux systems.
ClamAV® is an open-source antivirus engine for detecting trojans, viruses, malware & other malicious threats.

Features ClamAV:

eScan Antivirus is a software solution for virus protection and content security. eScan protects workstations from viruses (including zero-day threats), unwanted and inappropriate Internet content, and other security threats such as spyware, adware, keyloggers, rootkits, botnets, hackers attacks, spam and phishing.