Edgar
From Homestar Runner Wiki
File:edgarware.png
"Alright Edgar, now drop a train on 'em!"
Edgarware, or "Edgar the Virus Hunter," is Strong Bad's antivirus program on the Compy 386. He used in the email "virus," in an attempt to clean out the 423,827 viruses he had on his machine. However, The Virus split into The Viruses and defeated the program. Because of the Compy's fate in the email and its inability to destroy the viruses, we probably won't see it again.
This is the startup screen for Edgarware:
Edgar the Virus Hunter programmed entirely in mom's basement by Edgar c1982
Edgar makes an appearance on the virus themed Main Page 22.