My supervisor, Pam Sessoms, has spent years building up the IM reference service throughout campus at UNC. Up until recently, we’ve been using a combination of a custom Pidgin client and Meebo widgets to make the system run. But recently we swapped out the Meebo widget for a custom javascript-based chat widget that Pam and her husband have coded up on their own.
It’s still pretty early in development, but I think their ‘libraryh3lp’ system is an amazing step forward. For one thing, javascript has a much higher compatibility rate than Meebo, which relies on flash. I even got it to work on my iPod touch’s browser! It is also much better from an accessibility point of view, and plays nicer with screen readers for the visually impaired. Also also, the service runs on a custom Jabber server which gives the library much more internal control than relying on a third party network.
Eventually routing and queueing functions will be added, steering the product much more toward library-based usefulness than any of the IM clients currently out there. I’m really excited to see where this goes!
Here’s the project wiki: http://libraryh3lp.com/wiki/Main_Page
And the Google Code page: http://code.google.com/p/libraryh3lp/
And lastly, you can sign up for an account and get your widget up and running with these instructions:
http://code.google.com/p/libraryh3lp/wiki/WebChat