Tim Gill

Tim Gill (born October 18, 1953) is an American computer software programmer, entrepreneur, philanthropist, and LGBT rights activist. He is the founder and co-chair of the Gill Foundation, a private Denver-based philanthropic organization supporting the LGBT community across the country. He is the single largest individual donor to the LGBT rights movement in U.S. history, having personally committed more than $422 million since the early 1990s.Gill is also the founder of the pioneering page layout software company Quark, Inc. Gill sold his 50 percent stake in the company in 1999 for a reported $500 million.Gill's latest venture is JStar LLC, a smart home technology start-up that invented Josh.ai, a voice-controlled home automation system using JStar's own artificial intelligence technology platform.