Editing Desktop search (section)

====[[openSUSE]]====
<!--TODO! Prior desktop search before KDE 3.5-->
Starting with [[KDE4]], the [[NEPOMUK (software)|NEPOMUK]] was introduced.  It provided the ability to index a wide range of desktop content, email, and use semantic web technologies (e.g. [[Resource Description Framework|RDF]]) to annotate the database.  The introduction faced a few glitches, much of which seemed to be based on the [[triplestore]].  Performance improved (at least for queries) by switching the backend to a stripped-down version of the [[Virtuoso Universal Server|Virtuoso]] Open Source Edition, however indexing remained a common user complaint.
Based on user feedback, the Nepomuk indexing and search has been replaced with the Baloo framework<ref>{{Cite web|url=https://community.kde.org/Baloo|title = Baloo - KDE Community Wiki}}</ref> based on [[Xapian]].<ref>{{cite web |url=http://www.opensuse.org/ |title=Home |website=opensuse.org}}</ref>