According to the Sedna CTP, available at http://www.microsoft.com/downloads/details.aspx?FamilyId=2E8F1DEB-2972-4CEC-A7CA-E0991362A4FC&displaylang=en.

"NET4COM brings together a small subset of the .NET Framework — a collection of commonly used API that brings to VFP functionality that either did not exist before or was cumbersome to implement".

Also they state:
1.3 Non Goals
• Full coverage of the .NET Framework


In the other hand .NET Extender says:
# It puts in your hands the following wealth of functionality:

* Full access to the nearly 8,600 classes in the .NET Framework version 2.0
* Complete access to any .NET class of the 5,500 projects in sourceforge.net which uses C# like programming language.
* Full access to any .NET class of the 1,000 projects on sourceforge.net which uses VB.Net programming language.
* Full access to any .NET class of the 8,900 on www.GotDotNet.com.

# Additionally you can use any .NET Class from any .NET Assembly, opening you the door to the big third party components market available for .NET.

So, what do you think?