Inc’s 2012 list of the top 5000 fastest growing companies in the US  is now online. The top 3 spots go to:

United Payments – a financial service company that provides traditional and next-generation payment processing services to merchants, did $59.9 million in revenue, a 23,646% growth in 3 years.

Astrum Solar – a solar provider to homeowners and small businesses, did $26.9 million in revenue, growing 23,577% in 3 years.

Edge Solutions - an IT provider of storage, server, and networking services (which includes data center management and cloud computing), did $21.8 million in revenue, growing 21,036% in 3 years.