The following were the most widely used AV products based on Frost & Sullivan's research from 2004
Top 10 Anti-Virus products in 2004:
1. Symantec 38.1%
2. NAI 21.2%
3. Trend Micro 15.2%
4. Sophos 3.6
5. Computer Associates 3.4%
6. Sybari 2.1%
7. Panda 1.9%
8. F-Secure 1.4%
9. Kaspersky 1.0%
10.Norman 0.9%