From the 37signals.com footer: The names and logos for Basecamp, Highrise, Backpack, and 37signals are registered trademarks of 37signals, LLC. The names and l

From the 37signals.com footer: The names and logos for Basecamp, Highrise, Backpack, and 37signals are registered trademarks of 37signals, LLC. The names and logos for Campfire, Ta-da List, Sortfolio, and Writeboard are trademarks of 37signals, LLC.