A few years back I found a great Apache/Tomcat plugin that had a backend that auto-indexed all files within a directory (including PDF contents), and a frontend web interface to search and download appropriately. I recall it starting with a "Z" but can't remember what it was. What was great about it was the deployment. I just added the WAR files to the right tomcat directory and it was deployed.
Any ideas on what software this may have been? Or if there is newer/similar software I can try out? It was great to index all my documents and be able to access and search them remotely.