Next-Gen library catalog browser, VuFind. It is now officially open source code under the GPL and hosted on Sourceforge. We have been working on the application for quite some time now, almost a year, and for the past few months have been working with some local schools to test the application and begin to build some install scripts.
Please have a look at the project website to download the software and you can even try out a live demo of the software:
Roy Tennant’s review for VuFind:
http://www.libraryjournal.com/blog/1090000309/post/1050012105.html
