Racket

Racket : “Racket” team Racket is a programming language in the Lisp-family. In addition to being a general-purpose programming language, it is designed as a platform for language creation, design, and implementation. This PPA...

Ubuntu PPA for Racket 9.1 is now available at launchpad.net/~plt/+archiv...

Many thanks to Asumu Takikawa, David Bremner, and Sam Tobin-Hochstadt for all their work.

Sketching a planning language The best way to design a programming language is by doodling

wrote about some #racketlang ideas I had for an automated planning language

:racket: Racket meet-up: Saturday, 7 March 2026 Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 7 March 2026 at 18:00 UTC In your timezone: 2026-03-07T18:00:00Z (UTC). (converter). At this meet-up: WebRacket UK Racket…

Racket meet-up: Saturday, 7 March 2026 at 18:00 UTC

EVERYONE WELCOME 😁

Announcement, Jitsi Meet link & discussion at racket.discourse.group/t/racket-mee...

#λ #racketlang #lisp #wasm #webassembly

Racket v9.1 _posted by Stephen De Gabrielle and John Clements_ We are pleased to announce Racket v9.1 is now available from https://download.racket-lang.org/. As of this release:: Documentation organization and navigation...

Racket - the Language-Oriented Programming Language - version 9.1 is now available from download.racket-lang.org

See blog.racket-lang.org/2026/02/rack... for the release announcement and highlights.

WebRacket
A Racket to WebAssembly compiler.
Build practical browser applications with Racket.
soegaard.github.io/webracket/

QR code incorporating racket logo created with https://hughchen.github.io/qr_image/

UK Racket meet-up
Tuesday 17 March 7:30pm at
The City Pride
28 Farringdon Ln, London EC1R 3AU

We had a successful February Racket meet-up so we agreed to do the same next month!

www.eventbrite.com/e/uk-racket-...

racket.discourse.group/t/uk-racket-...

London Racket meet-up Tuesday 17 Feb 2026 7:30pm Let's have a meet-up! London Racket meet-up Tuesday 17 Feb 2026 7:30pm 2026-02-17T19:30:00Z (UTC) No fixed agenda, and it is expected to be small numbers - there will be 5 to 10 of us at most. If you...

All welcome - join us😁

London Racket meet-up Tuesday 17 Feb 2026 7:30pm

The City Pride (it has pizza)
28 Farringdon Ln, London EC1R 3AU

racket.discourse.group/t/london-rac...
#racket #lisp #scheme #rhombus #qi

Join us 😁
7:30 Tuesday at
The City Pride (it has pizza)
28 Farringdon Ln, London EC1R 3AU

Imagine applying for a job from an agency you never heard of. Over time, you become one of the most significant contributors to NASA’s rocket technologies. For #BHM'2026, ACM shares the story of Annie Easley and her impact on computing.

Hal and Gerry

Happy Birthday Gerry Sussman 🎂

See the keynote presentation by Hal Abelson and Gerald Sussman at the fourteenth RacketCon at youtu.be/_2qXIDO-cWw

#lisp #SICP

London Racket meet-up Tuesday 17 Feb 2026 7:30pm
details at racket.discourse.group/t/london-rac...
(alt-text: Fish with speech bubble 'London meet-up' with city and pizza emoji)

Racket birthday party and meet-up! Saturday, 7 February 2026 at 18:00 UTC Everyone is welcome to join us for the :racket: Racket birthday party and meet-up: Saturday, 7 February 2026 at 18:00 UTC In your timezone: 2026-02-07T18:00:00Z (UTC). (converter). At this…

Racket birthday party 🎉🎂and meet-up: Saturday, 7 February 2026 at 18:00 UTC. (in 15minutes)

EVERYONE WELCOME 😁

Announcement, Jitsi Meet link & discussion at racket.discourse.group/t/racket-bir...
#racketlang

Inside Racket Seminar 5. Robby Findler on Contracts The Racket repository. Contribute to racket/racket development by creating an account on GitHub.

Inside Racket Seminar 5. Robby Findler on Contracts

As part of the Inside Racket Seminar Robby Findler spoke about the Racket Contract system library with Jay McCarthy.

The seminar is oriented on the details of the implementation of Racket contracts.

github.com/racket/racke...

Tag your posts with #racketlang to be included on the feed: bsky.app/profile/did:...

Thank you @notjack.space ❤️

hey @racket-lang.org check this out

Racket birthday party and meet-up! Saturday, 7 February 2026 at 18:00 UTC Everyone is welcome to join us for the :racket: Racket birthday party and meet-up: Saturday, 7 February 2026 at 18:00 UTC In your timezone: 2026-02-07T18:00:00Z (UTC). (converter). At this…

Racket birthday party and meet-up: Saturday, 7 February 2026 at 18:00 UTC

EVERYONE WELCOME 😁

Announcement, Jitsi Meet link & discussion at racket.discourse.group/t/racket-bir...
#lisp #scheme #metaprogramming #csed #cs

Someone in a colourful shirt looking at a red film poster 'IL GRANDE RACKET'

Happy Birthday Racket
28 Jan 1995
racket-lang.org

youtu.be/JnczIyPXGfc

Still from (fifth RacketCon) showing date 26 January 1995

Racket birthday party and meet-up! Saturday, 7 February 2026 at 18:00 UTC racket.discourse.group/t/racket-bir...

Racket birthday party and meet-up! Saturday, 7 February 2026 at 18:00 UTC Everyone is welcome to join us for the :racket: Racket birthday party and meet-up: Saturday, 7 February 2026 at 18:00 UTC In your timezone: 2026-02-07T18:00:00Z (UTC). (converter). At this…

Racket birthday party and meet-up: Saturday, 7 February 2026 at 18:00 UTC
🎂 👯
EVERYONE WELCOME 😁

Announcement, Jitsi Meet link & discussion at racket.discourse.group/t/racket-bir...

Happy 50th Birthday to the Scheme programming language! May you keep evolving and inspiring!

https://web.archive.org/web/20230322172012id_/https://conservatory.scheme.org/schemers/Miscellaneous/imagine.txt

Scheme, the ur programming language, is 50 years old, as Jason Hemann just reminded me.

**for early adopters**

The WebRacket repo is now public at github.com/soegaard/web...
The WebRacket language is a subset of Racket that compiles to WebAssembly

examples github.com/soegaard/web...
and racket-stories.com/static/minis... a small Scheme interpreter

‘Sound Default-Typed Scheme’ by Jan-Paul Ramos-Davila
janpaul.pl/assets/pdfs/...

Presentation at ICFP/SPASH’25: youtu.be/VszVHbIX71c

Found via racket-stories.com
#types #typesystems

A language for scalable data analysis, ACL2 for Trustworthy Vibe Coding, lghtnng, Tue, Jan 13, 2026, 6:00 PM | Meetup Hello, hacker ladies and gentlemen! We're meeting in **San Francisco** this time. Hima Tammineedi of [Forge](https://withforge.com/) is hosting us at **6pm** on **Tuesday,

Racketeers! 📢:
BALISP meet-up

> A language for scalable data analysis, ACL2 for Trustworthy Vibe Coding, lghtnng, Tue, Jan 13, 2026, 6:00 PM www.meetup.com/balisp/event...

Racket meet-up: Saturday, 3 January 2026 Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 3 January 2026 at 18:00 UTC In your timezone: 2026-01-03T18:00:00Z (UTC). (converter). At this meet-up: Show and tell…

Lets try that again...

Racket meet-up: Saturday, 3 January 2026 at 18:00 UTC
EVERYONE WELCOME 😁
Announcement, Jitsi Meet link & discussion at racket.discourse.group/t/racket-mee...

Racket meet-up: Saturday, 3 January 2026 Everyone is welcome to join us for the :racket: Racket meet-up: Saturday, 3 January 2026 at 18:00 UTC In your timezone: 2026-01-03T18:00:00Z (UTC). (converter). At this meet-up: Show and tell…

Racket meet-up: Saturday, January 2026 at 18:00 UTC
EVERYONE WELCOME 😁
Announcement, Jitsi Meet link & discussion at racket.discourse.group/t/racket-mee...

Slideshow: Presentation Tool import: slideshow package: rhombus-slideshow-lib

Rhombus Slideshow: Figure and Presentation Tools

"The slideshow Rhombus library is built on the Racket slideshow library, but uses the Rhombus pict library’s picts and pict/text utilities for text layout. The slideshow module re-exports pict and pict/text."
docs.racket-lang.org/rhombus-slid...

Hippodamia parenthesis - Wikipedia

I present to you: the parenthesis lady beetle.

en.wikipedia.org/wiki/Hippoda...

Happy Birthday Ruby 🎂
The first public release of Ruby was on December 21, 1995

Someday I hope there's a friendly "build your own programming language" book that doesn't Draw The Rest of the Owl over type systems