Xapian Users

The following organisations are known to use Xapian. If you are using Xapian or know someone who is, please add an entry to the wiki.

Search Websites

Library of the University of Cologne
Xapian is used with OpenBib to search the library's OPAC (Online Public Access Catalogue)
Languages: German
Database size: 17 million title entries split across 213 separate databases (2015-03-05)

Die Zeit - German Newspaper
Application: Searching news articles; also powers internal search facilities for newspaper staff.
Languages: German
ABC Startsiden
Application: Search through 3 years worth of Norwegian news
Location: ABCSok
Languages: Norwegian
Document types: News stories

Tweakers.net - the largest Dutch ICT-website
Application: Forum search engine
Languages: Dutch
Document types: Complete forum discussions
Database size: Over 850,000 documents, about 15GB of uncompressed, 10GB compressed database size. (2008-07-14)
TheyWorkForYou.com
Application: Searching Hansard, the UK House of Commons Official Report; also email alerts
Languages: English
Database size: around 500,000 documents; 0.5G of source data. (2006-02-06)
mysociety.org
Application: web api to gazetteer service, built using Search::Xapian
spin.de
Application: Free online community with profiles, chat, boards, blogs, games, and more
Languages: German
Document types: User profiles, forums, mails, and help documents
Database size: 1.89 million documents (2007-03-29)
WhatDoTheyKnow.com
Application: Searching UK Freedom of Information Act requests and responses
UbuntuUsers.de
Application: Official German Portal for Ubuntu Linux
Document Types: forum posts, wiki articles, blog entries, planet entries
Language: German
Database size: 6.8G, around 2.2M documents, average length 250 (2009-11-28)

Gmane
Application: Searching archives of mailing lists (Gmane allows these to be viewed as newsgroups, or on the web)
Location: search.gmane.org
Database size: 120 million messages (2015-03-19)
Debian GNU/Linux
Debian use Xapian for:
- Debian Website Search
  Languages: Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Hungarian, Indonesian, Italian, Japanese, Korean, Lithuanian, Greek, Norwegian, Polish, Portuguese, Romanian, Russian, Slovak, Spanish, Swedish, Turkish, Ukrainian, Vietnamese
  Database size: 61 thousand pages (2015-03-05)
- Debian Mailing List Archive Search
  Languages: Danish, Dutch, English, Finnish, French, German, Hungarian, Italian, Portuguese, Romanian, Russian, Spanish, Swedish, and Turkish
  Database size: 5 million messages (2015-03-05)
- Debian Wiki Search
  Database size: over 13600 pages (2015-03-05)
- Searching their archive of software packages
  Database size: over 46000 packages (2015-03-05)
- Debtags Package Tagging uses Xapian for its smart search and tag editor.
Qoop - Online Auction Site
Application: Searching online auctions
Languages: Dutch
Database size: around 1.3 million documents (2015-03-05)
grokbase
Application: Searching mailing list archive
i use this
Provides a way to organise your Mac OS X applications and discover new ones (also available for iPhone and Microsoft Windows applications).
Who Said...
Application: Subtitle search for Doctor Who episodes.

Recoll
Application: Recoll is a personal full text search tool
Pinot
Application: Pinot is a personal search and metasearch tool for the Free Desktop
one laptop per child
Application: The One Laptop Per Child (OLPC) project is building a low-cost laptop for the world's poorest children. The datastore search is implemented using Xapian.

Roundup
Application: Roundup is an Issue Tracker which can use Xapian for searching
MoinMoin
Application: Wiki software with Xapian search.
LXR
Application: LXR, the Linux Cross Referencer.
ikiwiki
Application: Wiki software with Xapian search.
oVirt
oVirt provides management of virtual machines via a web-based virtual machine management console, and uses Xapian to provide search functionality.

Catalyst
Catalyst is a Web Development Framework which includes support for using Xapian as a search engine.
Djapian
Djapian provides integration between Xapian and Django (a high-level Python Web framework that encourages rapid development and clean, pragmatic design).
CouchDB Xapian
CouchDB Xapian is a search interface to CouchDB documents, that uses the Xapian Ruby bindings.