Vipul Ved Prakash is a software engineer and Internet entrepreneur. He is the co-founder of anti-spam company Cloudmark and social-media search company Topsy. In 2013, Topsy was acquired by Apple Inc. The acquisition was reported to be valued over $200M. In early 2000s, Prakash became widely known for creating Vipul's Razor, a popular open-source anti-spam system. He was named to the list of 2003's Top 100 young innovators in the world by MIT Technology Review for this work on anti-spam, at the age of 25.