CSharp

From APIDesign

Microsoft's copy of Java. As a brief, incomplete and wrong history of languages puts it:

In 2001 Anders Hejlsberg invents C#. C# is a relatively verbose, garbage collected, class based, statically typed, single dispatch, object oriented language with single implementation inheritance and multiple interface inheritance. Microsoft loudly heralds C#'s novelty.

Just like the term Java is often (incorrectly) used as a synonym for JVM, C# is often (incorrectly) used as a synonym for .NET framework.

See genetics for more opinions.