Language

Tcl

Scripting language

1988Appeared

dynamic typingType system

9.1.0Latest version

6Languages it influenced

Facts

Appeared: 1988
Type system: dynamic typing
Latest version: 9.1.0 (September 29, 2026)
Languages it influenced: 6
First release: 1988
Kind: multi-paradigm programming language, scripting language, interpreted language, procedural programming language, object-based language
Paradigms: event-driven programming, procedural programming, functional programming, imperative programming, multi-paradigm programming, object-oriented programming
Designed by: John Ousterhout
Developer: John Ousterhout
Influenced by: Lisp, AWK
File extensions: .tbc .tcl
Licence: BSD licenses
Influences listed: 2

Language	Appeared	Paradigms	Type system	Languages it influenced
Incr Tcl	1993	event-driven programming, functional programming, imperative programming, object-oriented programming	dynamic typing	—
Itk	1993	multi-paradigm programming	dynamic typing	—
Jsish	—	multi-paradigm programming	dynamic typing, duck typing	—
PHP	1995	reflective programming, procedural programming, functional programming, imperative programming, object-oriented programming	dynamic typing, gradual typing, weak typing	5
PowerShell	2006	reflective programming, procedural programming, functional programming, imperative programming, object-oriented programming	dynamic typing, inference typing, safe typing, strong typing	—
Tea	1997	functional programming, multi-paradigm programming, object-oriented programming	—	—

Language	Appeared	Paradigms	Type system	Languages it influenced
Expect	—	—	—	—
Scilab	—	array programming	dynamic typing	—

Framework	Kind	Licence
3DSlicer	application software	BSD licenses
Tkhtml	free software, browser engine	GNU Lesser General Public License