C# × 2
C# is a multi-paradigm, managed, object-oriented programming language created by Microsoft in conjunction with the .NET framework. C# can also be used with non-Microsoft implementations, such as Mono and Xamarin.
Python × 1
Python is a dynamic and strongly typed programming language designed to emphasize usability. Two similar but mostly incompatible versions of Python are in widespread use (2 and 3).
C × 1
C is a general-purpose computer programming language used for operating systems, libraries, games and other high performance work. It is clearly distinct from C++. It was developed in 1972 by Dennis Ritchie for use with the Unix operating system. The language is standardised as ISO 9899.
Java × 1
Go × 1
Go is an open source programming language initially developed at Google. It is statically-typed, with syntax loosely derived from C, adding automatic memory management, type safety, some dynamic-typing capabilities, additional built-in types such as variable-length arrays and key-value maps, and a large standard library.