Utilities that allow you to import or export data are also sometimes called filters.

(2) A pattern through which data is passed. Only data that matches the pattern is allowed to pass through the filter.

(3) In paint programs and image editors, a filter is an effect that can be applied to a bit map. Some filters mimic conventional photographic filters, but many transform images in unusual ways. A pointillism filter, for example, can make a digitized photograph look like a pointillistic painting.

Filters - Supplies liquid filtration products including centrifugal separators, polypropylene housings, coolant filter systems, filter indicators and more.

Labconco: Laboratory Filters - Supplies laboratory equipment and accessories, including chemical fume hoods, biological safety cabinets, glassware washers, and freeze dry systems.

Air Logic: Filters - The Air Logic Division of Fred Knapp Engraving Company, which designs and manufactures a comprehensive line of pneumatic and vacuum control equipment.