37signals.com – Small Business Software
This site is a privately-held Chicago-based company committed to building the best web-based software products possible with the least number of features necessary. Their products do less than the competition.
Their products are mainly built for small businesses and individuals. But companies of all sizes use them every day. From 1 person, to teams of 3-5 people to companies of 5000. They just provide simple tools that help get the job done and then get out of your way. Try their products and get things done with elegance, clearness, and simple software. Checkout their products for; base camp, high rise, backpack and campfire.