37signals
Ta-da Lists Widget v.1.3
Ta-da Lists Widget is a Dashboard widget that offers quick access to 37signals Ta-da Lists.
Telescope Basecamp Widget v.2.0.2
The Telescope Basecamp Widget is a free Mac OS Dashboard Widget for quick access to projects managed with 37signals' Basecamp web-based project management application.
Backboard v.1.0
37signals Backpack is perfect for collecting notes and tasks.