OPSWAT released its quarterly market share report today. This quarter's report includes data for Antivirus market share, Windows OS usage, and Backup Client market share and usage.

The top 10 Windows Antivirus vendors worldwide:
- AVAST Software 17.53%
- ESET Software 12.05%
- Symantec Corp. 10.04%
- AVG Technologies 9.71%
- Kaspersky Lab 8.42%
- Avira GmbH 8.26%
- Microsoft Corp. 7.99%
- Panda Security 5.94%
- McAfee, Inc. 5.02%
- PC Tools Software 2.74%
- Trend Micro, Inc. 1.79%
View the full report for information on Antivirus products, Windows OS usage and Backup Client usage.
