Add-ins extend ArcGIS Explorer's out-of-the-box functionality, and are delivered as add-in files (.eaz files). Like you can add layers to your map with .nmc files, you can add tools (buttons, dockable windows, and more) to ArcGIS Explorer with add-ins. Read More...

ArcGIS Online provides an easy way for GIS users to find and share useful content and resources, including maps, layers, and tools. These include a wide variety of specific file types unique to ESRI products, and you can view a complete list of supported Read More...