Tcl

Tcl (Tool Command Language) is a high-level, general-purpose, interpreted, dynamic programming language, designed by John Ousterhout in 1988 while working at the University of California, Berkeley, originally intended as an embeddable command language for interactive applications. Tcl is used for rapid prototyping, scripted applications, GUIs (through the widely used Tk toolkit), and testing, and its associated GUI toolkit Tk is commonly bundled with it as Tcl/Tk.

Tcl, short for Tool Command Language and pronounced tickle, is an open source programming language created in 1988 by John Ousterhout. It is a high-level, general-purpose, interpreted and dynamic language. The design goal was to be very simple but still powerful, and its central idea is that everything is cast into the mold of a command, including programming constructs such as variable assignment and procedure definition. The language has a long track record: it is close to forty years old and still has many thousands of public repositories on GitHub. It has tooling support in common editors and syntax highlighters, and a recorded interview with its creator is available.