.NET is both a business strategy from Microsoft and its collection of programming support for what are known as Web services, the ability to use the Web rather than your own computer for various services. Microsoft's goal is to provide individual and business users with a seamlessly interoperable and Web-enabled interface for applications and computing devices and to make computing activities increasingly Web browser-oriented.
.NET Framework 4.6.1
The release of .NET Framework 4.6.1 was announced on 30 November 2015.
.NET Framework 4.6
It supports a new just-in-time compiler (JIT) for 64-bit systems called RyuJIT, which features higher performance and support for SSE2 and AVX2 instruction sets. WPF and Windows Forms both have received updates for high DPI scenarios.
.NET Framework 4.5.2
The release of .NET Framework 4.5.2 was announced on 5 May 2014. For ASP.NET, higher reliability HTTP header inspection and modification methods are available as is a new way to schedule background tasks.
.NET Framework 4.5.1
The release of .NET Framework 4.5.1 was announced on 17 October 2013 along Visual Studio 2013.This version requires Windows Vista SP2 and later and is included with Windows 8.1 and Windows Server 2012 R2.
.NET Framework 4.5
.NET Framework 4.5 was released on 15 August 2012; a set of new or improved features were added into this version.The .NET Framework 4.5 is only supported on Windows Vista or later.
.NET Framework 4
Microsoft announced the intention to ship .NET Framework 4 on 29 September 2008. This functionality is not available in the final version of the framework.