Summa

Important: This project has been moved to https://github.com/statsbiblioteket/summa/

Lucens (and Solr) based search engine with very flexible setup and workflow system. It supports incremental updates, hierarchical faceting and index lookup with low memory overhead.

Note: Although Summa is open source, the focus is on features used at Statsbiblioteket. No explicit resources has been allocated for support of external users.