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Tcl

Tcl

Tcl - Tool Command Language

Tcl is a simple, interpreted scripting language designed for embedding in applications, featuring everything-as-commands syntax and extensibility.

Category

Scripting / Embedded

First Release

1988

File Extension

.tcl

Creator

John Ousterhout

Latest News

Tcl/Tk 9.1 Released With Stability And Performance Improvements

The Tcl/Tk 9.1 release introduces maintenance updates and targeted improvements to the language core and graphical toolkit following the recent transition to the 9.x series.

9/29/2026 • 0 likes

Difficulty

Intermediate 2/3

Unique everything-as-commands syntax and substitution rules require unlearning traditional programming paradigms.