PUBLIC MARKS with tags collaborative & opensource

Pootle is a user-friendly web portal that makes the translation process so much simpler. It allows online translation, work assignment, gives statistics and allows easy volunteer contribution. You can run Pootle as an Internet server like these projects or run your own copy on an Intranet (for individual work, team work or Translate@thons).

Celtx is the world's first fully integrated solution for media pre-production and collaboration. It replaces old fashioned 'paper, pen & binder' media creation with a digital approach to writing and organizing that's more complete, simpler to work with, a

It's an open source server and client system for enterprise messaging and collaboration email, contacts, and group calendaring. It has open APIs and a lot of potential for mashups. I was very impressed, desktop type interface with filders and tags.