Stephen Vickers of The University of Edinburgh has released his totally awesome open source IMS Basic LTI Blackboard Building Block and PowerLink:
They are downloadable from OSCELOT:
http://projects.oscelot.org/gf/project/bb-basiclti/
http://projects.oscelot.org/gf/project/wct-basiclti/
Also, here is Stephen’s demo of the Building Block in Action:
http://www.spvsoftwareproducts.com/bb/basiclti/demo.swf
I want to give my personal thanks to Stephen for working so hard for over a year to make this happen. He has been helpful in getting other vendors on board with IMS Basic LTI and always has responded to requests and queries almost immediately. A great example of how awesome Open Source people can be.
Here is a video about IMS Basic LTI if you are interested:
http://www.vimeo.com/8073453