Many of my blogging friends have extensive libraries. Organizing them can be a nightmare. Mine is a mess since I've gone back to school. In this cataloging course, I had to look at Integrated Library Systems and found some that are open-source so they have potential for large personal libraries. The one I researched extensively, Evergreen , is for public libraries that are consortium members, so that is not really an option. However, the second one on my list, Koha , was developed for the smaller library in mind and I'm thinking I might give it a try at home. You can see what the interface looks like by choosing a library from their showcase . Delicious Library 2 . This is really interesting looking and has a lot of visual appeal, but it's apparently only for Macs. Try it for free. $40 if you like it. Media Man is a windows alternative. Also $40. Collectorz.com Book Collector . Looks very much like Delicious, but has a $30-50 price tag for the standard/pro versions. There...