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Other programs use the file names for their results lists.
The use of the "title" tag gives a significantly better user experience, since metadata titles (when present) are written in ordinary language, while file names are less communicative.
Web results will open in a browser window, and selected computer results will be displayed in the "Quick Find" box (see above).
Even though other desktop search programs can search files meta data, Google Desktop (for Windows) is the only one that uses the "title" tag for its results lists of all files (On Linux it shows the meta-data of HTML files, but not PDF files).
When the title meta data is missing from a file, Google Desktop reverts to use its filename.
Google Desktop was originally developed to bring Google search technology to the desktop.
Google Desktop was a computer program with desktop search capabilities, created by Google for Linux, Apple Mac OS X, and Microsoft Windows systems.
It allowed text searches of a user's email messages, computer files, music, photos, chats, Web pages viewed, and the ability to display "Google Gadgets" on the user's desktop in a Sidebar.