Tekla
Tekla Corporation is a software engineering corporation specializing in model-based software products for building, construction and infrastructure management. The company was founded in 1966. Its head office is in Espoo, Finland, and the company was listed on the Helsinki Stock Exchange from May 2000 until February 2012.
In May 2011, California-based business technology specialist Trimble Navigation announced a public tender offer to acquire Tekla for $450 million. The acquisition was completed in February 2012.