Villanova University's Falvey Memorial Library has released VuFind 0.5 Beta. This open-source software operates in conjunction with Voyager OPACs (more drivers being developed), and it is powered by Solr.
Here's an excerpt from the project's home page:
VuFind is a library resource portal designed and developed for libraries by libraries. The goal of VuFind is to enable your users to search and browse through all of your library's resources by replacing the traditional OPAC to include:
- Catalog Records
- Digital Library Items
- Institutional Repository
- Institutional Bibliography
- Other Library Collections and Resources
VuFind is completely modular so you can implement just the basic system, or all of components. And since it's open source, you can modify the modules to best fit your need or you can add new modules to extend your resource offerings.