For those interested in papyrus documents, here's the blurb from a resource (with a search engine) dedicated to such:

Papyri.info is dedicated to the study of ancient papyrological documents. It offers links to papyrological resources, a customized search engine (called the Papyrological Navigator) capable of retrieving information from multiple related collections, and an editing application, the Papyrological Editor, which contributors can use to suggest emendations to PN texts.

The Papyrological Navigator aggregates and displays information from the Advanced Papyrological Information System (APIS), the Duke Databank of Documentary Papyri (DDbDP) and the Heidelberger Gesamtverzeichnis der griechischen Papyrusurkunden Ägyptens (HGV), as well as links to Trismegistos.

http://papyri.info/