9 .NET WinForms

When Microsoft released .NET, developers used WinForms, a thin covering on top of the Win32 API to make Windows applications. But Microsoft is now replacing WinForms with XAML. It started in Silverlight and now gets stronger with Metro. But the tons of WinForms applications which were built during the rise of .NET will be maintained for a long time.

10. ASP.NET WebForms

Microsoft developed the ASP.NET web application framework to allow programmers to build dynamic websites, web applications and services. WebForms tried to make Web development feel as familiar as possible to traditional desktop application developers and as a result, it gained much popularity which led to rapid adoption. So even though Microsoft is trying to streamline the ASP.NET, the webforms are here to stay for long.