Red (Programming Language) is described as 'Red is a new programming language, strongly inspired by REBOL' and is a Programming Language in the Development category. There are more than 10 alternatives to Red (Programming Language) for a variety of platforms, including Mac, Windows, Linux, BSD and Android. The best alternative is C (programming language), which is both free and Open Source. Other great apps like Red (Programming Language) are Lua (Free, Open Source), Scala (Free, Open Source), Racket (Free, Open Source) and Object Pascal (Free, Open Source).
Racket (formerly PLT Scheme) is a modern programming language in the Lisp/Scheme family, suitable for a wide range of applications. It goes beyond Lisp and Scheme with dialects that support objects, types, laziness, and more.
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.
Rebol (historically REBOL) is a cross-platform data exchange language and a multi-paradigm dynamic programming language designed by Carl Sassenrath for network communications and distributed computing.
REBOL vs Red (Programming Language) opinions
pros, cons and recent comments
loziniak Red is actually an implementation of REBOL with some differences. Even Red compiler is written in REBOL.