Strigi is a daemon which uses a very fast and efficient crawler that can index data on your hard drive. Indexing operations are performed without hammering your system, this makes Strigi the fastest and smallest desktop searching program. Strigi can index different file formats, including the contents of the archive files. You can see a detailed list of the supported file formats in this section. This version of Strigi is for the KDE Desktop.
Google Desktop Search provides an easy way to search and access your files, folders, bookmarks, history, and the web in general. Displays your search results in your web browser window.
A desktop search utility for indexing and searching user's data. At the moment, it can index filesystems, Pdigin/Gaim logs, Evolution mail and data, RSS, bookmarks, history and more. Integrates well into the Gnome Desktop and the Tracker Desktop Search applet.
Kerry is a KDE frontend for the Beagle desktop search daemon. A program for indexing and searching your data. At the moment, it can index filesystems, chat logs, email, rss and various other types of data.
Tracker is a personal search tool and storage system. It allows you to find the needle in your computers haystack as well as providing a one stop solution to the organizing, storing, and cataloging your data.