Dave writes: "OpenBiblio  is an easy to use, open source, automated library system written in PHP containing OPAC, circulation, cataloging, and library administration functionality. Beta version 0.2.1 has just been released. See obiblio.sourceforge.net for a full list of features. There is also a working demo. OpenBiblio focuses is on ease of use. Some of the current features include member admin (new, search, edit, del), bibliography admin (new, search, edit, copy, del), checkin, checkout, collections, material types, and a theme editor."