Startup PBWorks, which was formally known as PBwiki, specializes in helping businesses, non-profits, and educational institutions collaborate via wikis. The startup has steadily added innovative, real-time features to its platform, most recently integrating Twitter-like microblogging.

Today, PBworks is entering the stream by adding real-time functionality and voice collaboration within the application. PBWorks is adding four new features to its suite:

Instant Messaging

The startup is adding IM functionality to the application, which looks and operates just like Gchat. The platform allows PBWorks users in their organization to send them instant messages from within the product. Users can also request for co-workers to look at the workspace page they’re working on using the “send a link” function built into the IM system.

Live Notifications

Similar to notifications in a Facebook stream, PBWorks is adding Live Notifications alerts, which lets users know the different activity within their organization in real-time. Users can select which notifications they want t