37signals is a privately held web application company based in Chicago, Illinois, United States.
Since mid-2004, the company's focus has shifted from web design to web application development. Its first commercial application was Basecamp. This was followed by Backpack, Campfire, and Highrise. 37signals also maintains two free-use web applications, Ta-Da List and Writeboard. The company was responsible for launching the opensource web application framework Ruby on Rails, which it uses in its own applications.
United States of America
37signals develops simple web-based software products with individuals and small businesses in mind. Their main products include project management and collaboration tools, simple CRM, group chat and calendars. 37signals also have smaller products like to-do lists, group writing tools and job boards. Their main competitors include Salesforce, Netsuite and Zoho.