Disinfectant

Disinfectant was a popular antivirus software program for classic Mac OS.

History
Disinfectant was originally released as freeware by John Norstad in the spring of 1989. Disinfectant featured a system extension that would detect virus infections and an application with which users could scan for and remove viruses. New versions of Disinfectant were subsequently released to detect additional viruses.

Reception
Author praised and recommended Disinfectant in 1992.

Discontinuation
In May 1998, Norstad retired Disinfectant, citing the new danger posed by es, which Disinfectant did not detect, and the inability of a single individual to maintain a program that caught all of them.