Probably Boclean. Pest Patrol was used by me long ago.. Then some Anti-Trojan product that was really popular way back, forgot the name. Switched to Ewido when that license ran out.
First main AV I used was Norton way way back. Then I helped launch NOD32 in the USA and later assisted in localization and development of Mks_Vir (Polish AV) into the USA.. Then I moved on to GData and helped them localize it with the USA market under eXtendia AVK brand name and was involved with GData for a few years. Convincing people NOD32 was great was hard. Convincing them GData (eXtendia AVK) was the best AV in the world at the time was very very difficult. Mks_Vir was awesome at the time, but failed miserably in the USA. I still have photos of the original, first prototype english box somewhere around here, and a photo of the first US launched GData packaging.
Later I worked for Starforce, for awhile our copy protection was unbreakable. Then I helped engineer a product that was one of the first default-deny/SRP products of it's type - Safe N Sec. Which still exists and is used in a lot of ATM machine type markets. No machine was ever compromised with SafeNSec on it based on our metrics of the installed units at the time.
Ahh the good ole' days.