ooc is described as 'was born out of the desire to write cross-platform applications with a concise, yet clear syntax, and to produce native binaries rather than relying on a downloadable runtime' and is an app in the Development category. There are more than 10 alternatives to ooc for a variety of platforms, including Windows, Linux, Mac, BSD and Android. The best alternative is C (programming language), which is both free and Open Source. Other great apps like ooc are Go (Programming Language) (Free, Open Source), Rust (Free, Open Source), Lua (Free, Open Source) and CoffeeScript (Free, Open Source).
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 standard library, and ways to access to each platform's native capabilities.
Pike is a dynamic programming language with a syntax similar to Java and C. It is simple to learn, does not require long compilation passes and has powerful built-in data types allowing simple and really fast data manipulation.