Vigor is a clone of vi for UNIX that ads, as a joke, a cruel parody of Clippit, the Microsoft Office assistant. The name is a portmanteau of vi (the name of the original text editor) and Igor, Dr. Frankenstein's assistant. Vigor was written by Joel Ray "Piquan" Holveck in Sunnyvale, California, and the logo for Vigor was created by Tom Mulder. Vigor has spawned ports to other text editors as well, including Vim. There is also a Vigor visualization plugin for the audio player XMMS.