As a complete geographic information system (GIS), ArcGIS allows you to easily author data, maps, globes, and models on the desktop; serve them to a GIS server; and use them through Web, desktop, and mobile clients. The ArcGIS family of products includes desktop, server, mobile, and online GIS as well as ESRI data.

More information on ArcGIS ArcView http://www.esri.com/software/arcgis/arcview/index.html

Arc View Extensions

Extension products let you add more capabilities to ArcGIS Desktop. These specialized tools allow you to perform extended tasks such as raster geoprocessing, three-dimensional analysis, and map publishing. Read more about:

Available Extensions

ArcGIS 3D Analyst
ArcGIS Business Analyst
ArcGIS Data Interoperability
ArcGIS Geostatistical Analyst
ArcGIS Military Analyst
ArcGIS Network Analyst
ArcGIS Publisher
ArcGIS Schematics
ArcGIS Spatial Analyst
ArcGIS Survey Analyst
ArcGIS Tracking Analyst
ArcScan for ArcGIS
Job Tracking for ArcGIS
(JTX) Maplex for ArcGIS

More information on ArcGIS Extensions http://www.esri.com/software/arcgis/arcview/extensions.html

ESRI's ArcPad software is a mobile geographic information system (GIS) technology. ArcPad provides field-based personnel with database access, mapping, GIS, and global positioning system (GPS) integration via handheld and mobile devices. Data collection with ArcPad is fast and easy and significantly improved with immediate data validation and availability for informed decision making.

More Information on ArcPad
http://www.esri.com/software/arcgis/arcpad/index.html

ArcPad Application Builder

ESRI’s ArcPad Application Builder is the development and customization framework for ArcPad that enables users to create custom ArcPad interfaces, data entry forms, and tools to improve data collection and automate field tasks.

More Information ArcPad Application Builder http://www.esri.com/software/arcgis/arcpad/arcpad_appbldr.html