XOTcl

{{Infobox programming language

| name = XOTcl

| logo =

| paradigm = multi-paradigm: object-oriented, functional, Imperative, event-driven programming

| year = 2000{{cite web |url=http://nm.wu-wien.ac.at/research/publications/xotcl-tclconf.ps |title=XOTcl, an Object-Oriented Scripting Language |format=PostScript |last1=Neumann |first1=Gustav |last2=Zdun |first2=Uwe |date=February 2000 |access-date=2014-07-03}}

| designer = Gustaf Neumann and Uwe Zdun

| developer =

| latest_release_version = 1.6.8

| latest_release_date = {{start date and age|2014|04|29|df=yes}}

| typing = dynamic typing, everything can be treated as a string

| implementations =

| dialects =

| influenced_by = Tcl, OTcl

| influenced =

| website = [http://media.wu-wien.ac.at/ media.wu-wien.ac.at]

}}

XOTcl is an object-oriented extension for the Tool Command Language created by Gustaf Neumann and Uwe Zdun. It is a derivative of MIT OTcl and is based on a dynamic object system with metaclasses influenced by CLOS. Class and method definitions in XOTcl are completely dynamic. The language also provides support for design patterns through filters and decorator mixins.