Tcl/Tk 9.1 Released

89 points by dmux 1 hour ago | 19 comments

Tcl/Tk has got to be the easiest GUI system out there; you can get simple stuff going with no effort - nothing I've seen comes close to that simplicity.

Good to see it's getting some modern support.

elhosots 34 minutes ago |

Many VLSI CAD tools come with a tcl console window. Im gratified to see the continued language support

Kudo’s to Mr Osterhout’s long lived legacy

cmacleod4 1 hour ago |

For the full release announcements see:

https://newsgrouper.org/%3C119gpah$3eu5q$1@dont-email.me%3E (Tcl) and

https://newsgrouper.org/%3C119gpbh$3eu5q$2@dont-email.me%3E (Tk).

neofytos 1 hour ago |

Congrats to the community and the core team. Their dedication to maintaining Tcl/Tk as a gold standard of stability, pragmatism, and lightweight cross-platform development is inspiring.

Aldipower 25 minutes ago |

I once had an O'Really book named 'Perl/Tk'. I mean, I still have it somewhere... I've the feeling reading through it will maybe become my AI recovery therapy at some point?

aarroyoc 1 hour ago |

Last time I checked, there was no Wayland support (other than executing in XWayland). Has it changed?

cmacleod4 45 minutes ago | |

Wayland support is being worked on, aiming for release in Tk 9.2 next year.

See: https://wiki.tcl-lang.org/page/GSoC+Idea%3A+Tk+Backend+for+t...

5- 24 minutes ago | | |

glfw! that's a bit surprising.

i'd expect sdl, given wider platform coverage (e.g. mobile), more system integration (e.g. clipboard), and an existing port (https://androwish.org/home/dir?ci=trunk&name=jni%2Fsdl2tk)

baggachipz 1 hour ago |

New version of AOLServer incoming?

elitepleb 1 hour ago | |

https://github.com/naviserver-project/naviserver has you covered

WillAdams 1 hour ago | | |

Now if we could just bring back Navi/AOLPress....

pjmlp 1 hour ago | |

Ah, the memories.

The startup I joined in 1999 had its own application server loosely based on AOLServer architecture.

We had Apache + mod_tcl, IIS with our own ISAPI extension, then in box connections for all major RDMS across all key UNIXes and Windows NT/2000.

Some left to join companies doing Vignette projects, others eventually created OutSystems redoing the same ideas, but with the newly released .NET.

However it was also a lesson in performance issues, and the constant pressure to rewrite Tcl code into C extensions.

baggachipz 35 minutes ago | | |

I used it when I worked at AOL :)

Was great for rapid prototyping and a/b testing in volume. Not sure I'd pick it ever again for anything, but it was interesting for sure.

fithisux 31 minutes ago | |

Or Kenny Tilton's celtk or cello?

sgt 1 hour ago |

The cool thing is that even if you take something arguably super modern, like the latest Claude models, it is able to write Tcl/tk applications for you that you might not have done at that level in the past. With tests in tcltest too.

If you understand how generative models and agentic coding works, it's not a surprise. But for some reason it's still mind boggling to think that you can take very old stuff and build impressive programs.

neofytos 1 hour ago | |

I haven't tested this recently, but I bet it’s equally capable of writing custom Tcl extensions using the C API. Given how stable and clean the Tcl C interface has always been, it’s probably a perfect use case for LLM generation.

sgt 51 minutes ago | | |

Yeah should work. So that makes it possible to do literally anything. Tcl always had one foot in the old days and one foot in the modern era. It's not like ALGOL or anything.

superkuh 1 hour ago |

Excellent to read Tk is getting better acessibility support. I love using it for quick little Perl/Tk GUI applications but I'm also slowly going blind from retinal tearing. It's good to see progress in some GUI toolkits when major desktops like KDE have dropped accessibility in their latest releases.

fithisux 36 minutes ago |

Tcl/Tk has saved me back in the day. The Windows distribution BAWT/Magicsplat are timely updated

..... but they do not come with Next Scripting Framework.

There was a new release on September 16, 2026