Tcl is described as '(originally from "Tool Command Language", but conventionally rendered as "Tcl" rather than "TCL"; pronounced as "tickle" or "tee-see-ell") is a scripting language created by John Ousterhout' and is an app in the Development category. There are more than 50 alternatives to Tcl for a variety of platforms, including Linux, Windows, Mac, BSD and Haiku. The best alternative is Python, which is both free and Open Source. Other great apps like Tcl are Java (Free Personal, Open Source), PHP (Free, Open Source), C (programming language) (Free, Open Source) and C++ (Free, Open Source).
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 comprises a combination of both high-level and low-level language features.
Ruby is a dynamic, reflective, general purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features. Ruby originated in Japan during the mid-1990s and was initially developed and designed by Yukihiro "Matz" Matsumoto.