BASE (search engine)

BASE (Bielefeld Academic Search Engine)
	Logo
	Aerial view of Bielefeld University with recognizable construction progress at the new main entrance from June 15th, 2022
Website type	Academic Internet search engine
Available in	Chinese (simplified), German, English, French, Spanish (Castilian), Polish, Greek, Ukrainian
Area served	Worldwide
Owner	Bielefeld University Library
Website	www.base-search.net
Commercial	No
Registration	Optional
Launched	June 24, 2004
Current status	Active

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BASE (Bielefeld Academic Search Engine) is a multi-disciplinary search engine to scholarly internet resources, created by Bielefeld University Library in Bielefeld, Germany. It is based on free and open-source software such as Apache Solr and VuFind. It harvests OAI metadata from institutional repositories and other academic digital libraries that implement the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH), and then normalizes and indexes the data for searching. In addition to OAI metadata, the library indexes selected web sites and local data collections, all of which can be searched via a single search interface.