Can someone explain the differences, status and future of various ASP.NET AJAX libraries and toolkits?

Question

I am confused by the differences and relationships between the various components / libraries / toolkits of Microsoft ASP.NET AJAX and especially their naming.

It starts relatively simply with ASP.NET AJAX:

• ASP.NET AJAX 1.0 (available for ASP.NET 2.0 in a separate package with the extension ASP.NET 1.0)
• ASP.NET AJAX 3.5 (included with ASP.NET 3.5)
• ASP.NET AJAX 4.0 (included with ASP.NET 4.0)

Then come the various projects on CodePlex and elsewhere:

ASP.NET AJAX Control Toolkit (also known as Ajax Control Toolkit)

• Samples
• CodePlex
• The September 2009 release seems to be the final release of the Original Ajax Control Toolkit and that it was replaced ...

Ajax Control Toolkit in ASP.NET Ajax Library

• , ASP.NET AJAX Control Toolkit ASP.NET Ajax, - CodePlex. - , "Control Toolkit", 2009 Original ASP.NET AJAX Control Toolkit
• CodePlex

Microsoft Ajax

• , ASP.NET Ajax Library, ?
• " " Preview 6 Ajax Control Toolkit ASP.NET Ajax Library?
• CodePlex
• Microsoft ASP.NET Ajax Wiki - ASP.NET

, .

Answer 1

ASP.NET AJAX . Ajax , . 2.0, 3.5. ASP.NET AJAX 4.0, , , .

4.0 , script , , Ajax Control Toolkit, , . .

.