The best Compiler alternative to Hack is Nim (programming language), which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Hack and four of them are Compilers so hopefully you can find a suitable replacement. Other interesting Compiler alternatives to Hack are Scala, Crystal (programming language) and thinBasic Programming Language.
Nim is a statically typed, imperative programming language with a powerful macro system that tries to give the programmer ultimate power without compromises on runtime efficiency.
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 type-safe way.
Programming language with Ruby-like syntax that compiles to efficient native code.
Very fast BASIC like programming language for console and gui applications, automate process, automate data exchange, connect to databases, send mails, ftp, rest api, parsing, tokenizing, files, OpenGl, graphics, sound, printing ... much more.
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