HighRise - The Next 37Signals Product

37signals.com — Highrise is a shared contact manager that helps you keep track of who you talk to, what was said, and what to do next. Like Basecamp helps you collaborate on projects, Highrise helps you collaborate on people. You can use it alone or with your co-workers. You can think of it as a company-wide, web-based, shared address book with a few twists.