From AvisMap GIS Technologies:
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, VB.NET, C#, Visual C++ and other ActiveX compatible programming languages, with Microsoft Visual Studio versions 6, 2003, 2005, and Express. Supports .NET via COM. This version is the first release on CNET Download.com.