37signals
platform Chicago, Illinois Founded 1999 11-50 employees
37signals is a Chicago-based, bootstrapped software company founded in 1999. Creators of Basecamp and the Ruby on Rails framework. Privately held, profitable, deliberately small.
About 37signals
37signals is a privately held software company founded in 1999 in Chicago, Illinois by Jason Fried, Carlos Segura, and Ernest Kim. Co-founder David Heinemeier Hansson created the Ruby on Rails framework while building Basecamp in 2003. The company is bootstrapped, profitable, and has remained intentionally small. Products include Basecamp (project management), HEY (email), and Once (one-time-purchase software). 37signals has been publicly critical of venture capital, remote-work norms, and generative AI use in product development.