1)   AvisMap Free Viewer 5.2
The free AvisMap Viewer opens most GIS/CAD and raster image file types and most ArcView, ArcExplorer, and MapInfo projects. Besides just opening and viewing files, the Viewer supports an extensive list of features.

 2)   AvisMap GIS Engine 5.0
AvisMap GIS Engine is a comprehensive SDK for the development of custom GIS applications and solutions. This SDK provides several ActiveX (OCX) controls which support Visual Basic, C#, Delphi, Visual C++ and other ActiveX compatible language.