Alternatives to C# for all platforms with any license

Python

Python is an interpreted, interactive, object-oriented, extensible programming language. It provides an extraordinary combination of clarity and versatility, and is free...

Free Open Source Mac Windows Linux S60 BSD ... AROS Haiku AmigaOS OpenSolaris MorphOS
Object-oriented Language Dynamic typing Garbage Collection High Level ... Modular System Object-oriented Language Add a feature

1043 Like
Java

Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation...

Free Open Source Mac Windows Linux Web Android ... Java Mobile S60 HP webOS Blackberry Android Tablet BSD Blackberry 10 PlayBook Kindle Fire
Object-oriented Language Garbage Collection Object-oriented Language Subtasks ... X86/x64 Compatibility Add a feature

548 Like
C++

C++ is a statically typed, free-form, multi-paradigm, compiled, general-purpose, powerful programming language. It is regarded as an intermediate-level language, as it...

Free Open Source Mac Windows Linux BSD
Object-oriented Language Add a feature

243 Like
C (programming language)

C is a general-purpose computer programming language. C is one of the most widely used programming languages of all time.

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet BSD iPad AROS Android Wear Haiku Playstation
Compiled Language Add a feature

251 Like
Ruby

Ruby is a dynamic, reflective, general purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features. Ruby originated...

Free Open Source Mac Windows Linux BSD Haiku
Object-oriented Language Add a feature

229 Like
Lua

Lua is a powerful, fast, lightweight, embeddable scripting language. Lua combines simple procedural syntax with powerful data description constructs based on...

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet BSD iPad Android Wear Haiku AmigaOS Playstation MorphOS
Scripting language Scripting Add a feature

139 Like
Go (Programming Language)

Go, also called golang, is a programming language initially developed at Google in 2007 by Robert Griesemer, Rob Pike, and Ken Thompson. It is a statically-typed...

Free Open Source Mac Windows Linux BSD
No features added Add a feature

89 Like
Rust

A systems programming language that runs blazingly fast, prevents almost all crashes, and eliminates data races. .
- Modern looking. Was surprisingly easy for me to move to Rust from c# even though everybody says it has a steep learning curve. Guest • Feb 2017
Free Open Source Mac Windows Linux BSD
Typesafe Abstract Data Types Package Manager Pattern matching ... Type inference Add a feature

57 Like
Perl

Perl is a high-level, general-purpose, interpreted, dynamic programming language with over 22 years of development. The Perl languages borrow features from other...

Free Open Source Mac Windows Linux BSD Haiku
Shell integration Add a feature

117 Like
Haskell

Haskell is an advanced purely-functional programming language. An open-source product of more than twenty years of cutting-edge research, it allows rapid development of...

Free Open Source Mac Windows Linux BSD
Functional Language Add a feature

53 Like
Scala

Scala is a modern multi-paradigm programming language based on the Java Virtual Machine (JVM) designed to express common programming patterns in a concise, elegant, and...

Free Open Source Mac Windows Linux BSD
Compiled Language Functional Language Object-oriented Language Add a feature

61 Like
Dart

Dart (originally called Dash) is a Web programming language developed by Google. It was unveiled at the GOTO conference in Aarhus, 2011 October 10-12. The goal of Dart...

Free Open Source Mac Windows Linux Web
No features added Add a feature

60 Like
D (Programming Language)

D is a language with C-like syntax and static typing. It pragmatically combines efficiency, control, and modeling power, with safety and programmer productivity. ...

Free Open Source Mac Windows Linux BSD
Contract programming Functional Language High Level Multiparadigm ... Object-oriented Language Add a feature

47 Like
Julia

Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing...

Free Open Source Mac Windows Linux
Parallel Computing Add a feature

39 Like
Haxe

Haxe is an open source toolkit based on a modern high level strictly typed programming language, a state-of-the-art light-speed cross-compiler, a complete cross-platform...

Free Open Source Mac Windows Linux Raspberry Pi
Object-oriented Language Pattern matching Add a feature

35 Like