In addition to its corporate product range, Trend Micro is known for producing the PC-cillin family of desktop internet security software, and is the creator of the free online browser-based malware scanner, HouseCall. They have a global security threat research and response center, called TrendLabs, operating across 7 centers worldwide. Trend Micro has over 3000 employees in over 30 countries, see Trend Micro Website - corporate informtion page. In 2008, Trend Micro ranked 33rd on the list of largest software companies in the world, see Software Top 100: "The World's Largest Software Companies" The company is on the US Federal Buying Schedule 70 through resellers Softchoice, ASAP, and Synnex.