Crystal Language

A new patch release Crystal 1.20.1 fixes some regressions and disables Kernel TLS (added in 1.20.0), due to instability. Read more at crystal-lang.org/2026/04/29/1.2… #crystallang

A new Crystal release is out for version 1.20.0 Highlights: `@[TargetFeature]` annotation, new process spawn API, support for kernel TLS and io_uring. The latter requires execution contexts which is now in the final preview. Read more at crystal-lang.org/2026/04/16/1.2…

We’re gathering for a Crystal #Meetup in #Stockholm! Beta Ziliani from the Core Team and Carl Hörberg from LavinMQ will share insights and experiences of using #crystallang. Food, drinks, and tech talks - Feb 18th at Guldbaren. crystal-lang.org/events/2025-st…

I'm giving a talk about #crystallang at #FOSDEM It's going to be an intro, but I'll try not to bore anyone who's already familiar with the language. Hope to see you there =) fosdem.org/2025/schedule/… PS. I'll bring some swag.

Happy New Year, happy new release! 🎇 1.15.0 is out with a new, efficient event loop, support for MinGW-W64 and MSYS2, improvements for BSD platforms, and many more features. Watch out for the formatter changes, they'll likely affect your codebase! crystal-lang.org/2025/01/09/1.1…

And we have a new release: Crystal 1.14.0 🚀 Read about the highlights in crystal-lang.org/2024/10/09/1.1… Happy Crystalling! #CrystalLang #release

Core Team member @ysbaddaden started toying with BLAKE3, trying to assess how much faster it was compared to SHA256 in Crystal… What started as a simple benchmark ended up in a discovery of a performance issue related to structs and its Ruby-based syntax. crystal-lang.org/2024/09/10/dig…

We are thrilled to announce the release of Crystal 1.13.0 crystal-lang.org/2024/07/09/1.1… You can now rescue module types! And there are a few improvements on parallelism. Happy Crystalling! #CrystalLang #release

Do you know why @LavinMQ can handle so many connections and process that many messages? There are several reasons, but one of them is because developers can understand the library code the application runs. crystal-lang.org/2024/05/22/lav… #performance #crystallang #lavinmq #programming

Core Team member Johannes (@JoMueFd) will be presenting a talk about Crystal and its use for Rubyists at @helvetic_ruby 💎 Check it out at #johannes-mueller-the-power-of-crystal-a-language-for-humans-and-computers" target="_blank" rel="nofollow noopener">helvetic-ruby.ch/talks/#johanne…

We are thrilled to announce the release of Crystal 1.12.0 crystal-lang.org/2024/04/09/1.1… It's a big release which brings progress on many fronts. Happy Crystalling! #CrystalLang #release

We relaunched crystal-lang.org with an updated design and a ton of improvements. 🎉🥳 Hope you like it! Read the anouncement: crystal-lang.org/2024/03/27/web… #CrystalLang #website #relaunch

We're reorganizing the sponsoring tiers in OpenCollective: crystal-lang.org/2024/03/25/new… If you're a sponsor, read about the changes in the current tiers. If not, maybe consider contributing to help us make Crystal better? #CrystalLang

Happy 3rd anniversary of Crystal 1.0! 🥳🎉 Now we're already approaching the 12th minor release 🚀 Did you know how to approximate any realease date since 1.0? carc.in/#/r/gllx So we're expecting Crystal 1.100 in April of 2046. Long way to go! 😆 #CrystalLang

We're happy to announce that Julien Portalier (ysbaddaden) is rejoining the Crystal Core Team. He's working on Crystal at Manas.Tech with a focus on improving multi-threading. crystal-lang.org/2024/02/28/the… #CrystalLang #Multithreading

We're partnering with @84codes to improve Crystal's concurrency model for multi-threading. This is going to be a lengthy process, but it's already bearing some early fruits. #CrystalLang #Multithreading

Crystal sits between dynamic languages like Ruby and compiled languages like C++. Maybe it is a good language to bridge programming language communities... 🤔 Read what Bright has to say: forum.crystal-lang.org/t/crystal-the-… #programming #crystallang #rubylang #cpp

Crystal is getting a more formalized mechanism for discussing language change proposals. This should help to line out which steps are needed and clarify where a proposal is standing. The first order of business is an RFC about the process itself: 🤓 github.com/crystal-lang/r…

Crystal 1.11.2 is released! This patch release fixes two regression bugs from 1.11.0. You can read the details in crystal-lang.org/2024/01/18/1.1…

We are making good progress in providing full Windows support. Check out the latest advances that make it to the recent release, and what is yet to come, in the hand of Core Team member and experience developer Quinton: crystal-lang.org/2024/01/19/win… #Windows #Programming #CrystalLang