--- title: Develop Cross-Platform CLI and GUI Tools With Tcl/Tk description: A comprehensive primer on Tcl/Tk, the open-source Tool Command Language and its GUI toolkit, covering why a developer might choose it for cross-platform CLI... canonical: https://daily.dev/posts/develop-cross-platform-cli-and-gui-tools-with-tcl-tk-zmh8afilr twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Develop Cross-Platform CLI and GUI Tools With Tcl/Tk | daily.dev og:description: A comprehensive primer on Tcl/Tk, the open-source Tool Command Language and its GUI toolkit, covering why a developer might choose it for cross-platform CLI... og:url: https://daily.dev/posts/develop-cross-platform-cli-and-gui-tools-with-tcl-tk-zmh8afilr og:image: https://api.daily.dev/og/posts/ZMh8AFILr.png og:image:alt: Develop Cross-Platform CLI and GUI Tools With Tcl/Tk og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Develop Cross-Platform CLI and GUI Tools With Tcl/Tk **[Lobsters](https://daily.dev/sources/lobsters)** · 208 min read · 0 upvotes · 0 comments ## Summary A comprehensive primer on Tcl/Tk, the open-source Tool Command Language and its GUI toolkit, covering why a developer might choose it for cross-platform CLI and GUI tool development. The post walks through Tcl's history, core syntax, homoiconicity, the Tk GUI toolkit and its themed widgets, threading, coroutines, standalone app packaging, and the major improvements in Tcl 9.0. It also honestly addresses Tcl's quirks and limitations, including the risks of its string-as-code philosophy, while highlighting real-world usage at companies like Intel, NVIDIA, Cisco, and ESA. The author compares Tcl/Tk against alternatives like Electron, Qt, Go/Fyne, and C#/WinForms, arguing Tcl/Tk offers a uniquely lightweight, native-looking, and backwards-compatible solution. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Tcl/Tk 9.1](https://daily.dev/posts/tcl-tk-9-1-jj4sxhcha) · Lobsters · 0 upvotes · 0 comments - [Why TUIs are back by Alcides Fonseca](https://daily.dev/posts/why-tuis-are-back-by-alcides-fonseca-kzt8sv2vd) · Lobsters · 84 upvotes · 3 comments - [Building a Python GUI Application With Tkinter Quiz – Real Python](https://daily.dev/posts/building-a-python-gui-application-with-tkinter-quiz-real-python-q5frtxpa7) · Real Python · 0 upvotes · 0 comments --- Tags: [#cli](https://daily.dev/tags/cli) [View this post on daily.dev](https://daily.dev/posts/develop-cross-platform-cli-and-gui-tools-with-tcl-tk-zmh8afilr) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Develop Cross-Platform CLI and GUI Tools With Tcl/Tk","url":"https://daily.dev/posts/develop-cross-platform-cli-and-gui-tools-with-tcl-tk-zmh8afilr","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/develop-cross-platform-cli-and-gui-tools-with-tcl-tk-zmh8afilr"},"datePublished":"2026-07-28T15:10:21.183Z","dateModified":"2026-07-28T15:13:27.627Z","description":"A comprehensive primer on Tcl/Tk, the open-source Tool Command Language and its GUI toolkit, covering why a developer might choose it for cross-platform CLI...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7d8eebcf8bfacaf76ed679f255305a8b?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7d8eebcf8bfacaf76ed679f255305a8b?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Lobsters","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Lobsters","logo":"https://media.daily.dev/image/upload/s--tl8v_Fku--/f_auto,t_logo/v1698841318/logos/lobste.jpg","url":"https://daily.dev/sources/lobsters"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/develop-cross-platform-cli-and-gui-tools-with-tcl-tk-zmh8afilr","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"cli","timeRequired":"PT208M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Lobsters","item":"https://daily.dev/sources/lobsters"},{"@type":"ListItem","position":3,"name":"Develop Cross-Platform CLI and GUI Tools With Tcl/Tk"}]} ```