CambridgeSoft
 CambridgeSoft was a cheminformatics software company based in Cambridge Massachusetts USA. The company was founded in 1986 by Stewart Rubenstein then a graduate student in chemistry at Harvard University and ended operations as an independent company in 2011. The historical main product is the molecule editor ChemDraw often sold as part of the ChemOffice suite of programs. In 2011 CambridgeSoft was sold to PerkinElmer a laboratory instruments company.