Collabration Tool - Jquery - Flex

We would like to have collaboration tool as similar to chat applications but works on web. Details will be provided but what we are looking is very similar to [login to view URL] Basically system let users to: *chat through different messaging options such as web, Skype, msn. The messages sent to specific address from skype or msn, or internally (web page) must be saved and displayed on the wall of the collaboration app and re-displayed again upon request. *file sharing options must be exist, user must easily drag and drop various files such as word, excel, txt etc *some other components can be added to conversation (let say flow in flowdocks language) . These other components will be loaded from web services (services are ready , we will be providing required methods) Details will be provided upon request. If you already have an solution we may also interested.