Pinot is a D-Bus service that crawls, indexes your documents and monitors them
for changes, with a GTK-based user interface that enables to query the index
built by the service or your favourite Web engine, and display and analyze the
results.

Features:
- advanced queries (probabilistic search, boolean filters, date ranges).
- language detection.
- listing of indexed documents.
- editing of metadata.
- automatic results labeling.
- stored queries.
- results ranking history.
- dynamic document summaries.
- only crawl and index the directories you choose.
- D-Bus interface for easy integration with other applications, eg Deskbar
  Applet.
- no dependency on GNOME or KDE.
- support for common file types.
- search your desktop and the Web.
- query remote indexes.

WWW: http://code.google.com/p/pinot-search/