It's been a while, but I think I didn't bother going any further back because Mosaic was the last time the user agent string that made sense. After that we got

It's been a while, but I think I didn't bother going any further back because Mosaic was the last time the user agent string that made sense. After that we got "Mozilla" and things started going crazy. Hopefully the humorous tone dissuades anyone from thinking it was meant to be a serious and comprehensive treatment of the subject.