i-Tor is a set of Tools and Technologies for Open Repositories, based on Linux, Java, MySQL, Mirage and other free components. It harvests OAI and turns databases into Open Archives. It includes similarity, backlinks and related search based on Lucene.
BioQuery is a bioinformatics tool that acts as a query builder for genetic, protein, publication, and other biomedical databases. BioQuery is also an update service that periodically resubmits saved searches and sends you new data as it is found.