Acrobat.com. EtherPad. Free Collaborative. QuickTopic. Google docs. Nordic River. SynchroEdit. Springloops. ThinkFold. Writeboard. Hello, We launched Writeboard back in October of 2005 as a stand-alone service.
A few years later we integrated Writeboards into Basecamp Classic and Backpack. Today, the vast majority of Writeboards are created inside those two products. Zoho Writer.