ArcGIS 3D Analyst provides powerful and advanced visualization, analysis, and surface generation tools. The user can view large datasets from multiple viewpoints, query a surface, and create realistic perspective images. Users can also drape raster and vector data over a surface, and extrude two-dimensional features to three dimensions using attribute data. The ArcGIS Data Interoperability extension eliminates barriers to data sharing by providing direct data access, data transformation, advanced format creation, and geoprocessing model integration. Jointly developed by ESRI and ESRI Strategic Alliance Partner Safe Software, this extension is built on Safe Software’s industry standard Feature Manipulation Engine (FME) technology. With ArcGIS Data Interoperability, any standard GIS data, regardless of the format, can be used within the ArcGIS Desktop environment. The ArcGIS Data Interoperability extension is fully integrated with the geoprocessing framework in ArcGIS and can provide data read, transformation, and translation capabilities in ModelBuilder models. ArcGIS Data Interoperability requires ArcView 9, ArcEditor 9, or ArcInfo 9. ArcGIS Geostatistical Analyst provides a dynamic environment with a wide variety of tools for spatial data exploration, identification of data anomalies, optimum prediction, evaluation of prediction uncertainty, and surface creation. Maplex for ArcGIS is an advanced cartographic text placement extension for the ArcGIS Desktop. Using a comprehensive set of placement options, Maplex for ArcGIS automatically positions text to a high cartographic standard. ArcGIS Network Analyst is a powerful extension for routing, and will provide a whole new framework for network-based spatial analysis (i.e., location analysis, drive time analysis, and spatial interaction modeling). This extension allows ArcGIS Desktop users to model realistic network conditions and scenarios. ArcGIS Publisher is an ArcGIS extension that converts map documents (MXD) to published map files (PMF). PMFs can be widely distributed and viewed through ESRI’s free, downloadable ArcReader. ArcGIS Spatial Analyst provides a broad range of powerful spatial modeling and analysis features. The users can create, query, map, and analyze cell-based raster data and perform integrated raster/vector analysis. ArcGIS Survey Analyst is an ArcGIS extension that enables users to manage survey data in a geodatabase and display survey measurements and observations on a map. ArcGIS Survey Analyst bridges the gap between mapping databases and modern surveying systems by enabling surveyors and GIS technicians to work together in an integrated system. ArcView Tracking Analyst, an optional extension for ArcView 3.x, enables users to explore, visualize, and analyze information relative to time, motion, and change. ArcScan for ArcGIS provides a powerful and easy-to-use set of tools for raster-to-vector conversion. Use this ArcGIS extension to create vector features and perform batch vectorization. Source.