GraphPad Software Inc. was a privately held software development corporation until its acquisition by Insight Partners in 2017. The company was named Insightful Science, which itself merged with Dotmatics in 2021. The original software was written by Harvey Motulsky in 1989 and it was co-founded by Motulsky and Earl Beutler. The company operates in California. Its products include the 2D scientific graphing, biostatistics, curve fitting software GraphPad Prism and the free, web-based statistical calculation software, GraphPad QuickCalcs.