Getting Real – Lessons in WebApplication Development

“37signals used the unconventional Getting Real process to launch five successful web-based applications (Basecamp, Campfire, Backpack, Writeboard, Ta-da List), and Ruby on Rails, an open-source web application framework, in just two years with no funding, no debt, and only 7 people.”

From the book you learn how they are working. Make also sure to check out their great web-applications.

Getting Real Book