«Greasemonkey is a Firefox extension which lets you to add bits of DHTML ("user scripts") to any web page to change its behavior. In much the same way that user CSS lets you take control of a web page's style, user scripts let you easily control any aspect of a web page's design or interaction.»
"""Piggy Bank is an extension to the Firefox web browser that turns it into a “Semantic Web browser”, letting you make use of existing information on the Web in more useful and flexible ways."""
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