Edgar

From Homestar Runner Wiki

Edgarware, or "Edgar the Virus Hunter," is Strong Bad's anti-virus program on the Compy 386. He used it in the email "virus," in an attempt to clean out the 423,827 viruses he had on his machine. However, the viruses quickly brought the end to the Compy.

This is the startup screen for Edgarware:

Edgar the Virus Hunter

programmed entirely
in mom's basement
by Edgar      c1982

Edgar's weird name may be a reference to Norton AntiVirus, or the entire program's name may be a play on Microsoft's "Dr. Watson" which apparently is to help fix your computer, though if it is needed it is usually too late.

Edgarware makes an appearance in the virus-themed Main Page 22.

There is another software similar to Edgarware called Edga Jr., which first appeared in long pants.