Highrise

Highrise, the latest release from the crack team at 37signals, is an online contact manager. What a great tool for freelancers and small studios—keep track of who you talked to or emailed with, what was said, set reminders for upcoming conversations, tasks, follow ups and thank yous. Best of all, like their other excellent online products Basecamp and Backpack, there is a free limited account option, giving you no reason not to try it out.