ArcView GIS is a desktop geographic information system. With ArcView GIS you can create intelligent, dynamic maps using data from virtually any source and across most popular computing platforms. ArcView GIS provides the tools to let you work with maps, database tables, charts, and graphics all at once. You can also use multimedia links to add pictures, sound, and video to your maps.

ArcView Extension

An extension is a plug-in to ArcView GIS 3.1 that you can load when you need additional functionality. Several extensions come bundled with ArcView GIS. There are also optional extensions for ArcView GIS that provide advanced analysis and functional capabilities.