PUBLIC MARKS with tags collaborative & multi

Collaborative online office, calendars, tasks...

Has two webapps: SMBWorks - Tool for collaboration, information sharing, document management, project management and extranet administration for all users. SMBApps - Enhanced, department-specific applications for sales, marketing, customer support, HR and finance, fully integrated and targeted for functional users.

Online personal and collaborative desktop: File storage, semi-social Bookmarks, Personal Startpage, Notebook application, Web agent, Messageboard and Instant Messaging

TracBac makes it simple for designers / creators to share, comment, collaborate and interact with their clients. It's simple, easy, and web-based.