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/… #crystallang

A new patch release is out: Crystal 1.21.1 brings important security patches, and a regression fix for macOS 26.7+ crystal-lang.org/2026/09/26/… #CrystalLang

I'm a Crystal @CrystalLanguage Core Team member and I created Kemal @crystalkemal (3.8k+ ⭐, 5M+ downloads). I've been building Crystal tools since 2015. Now I'm working on gcry, a %100 Crystal garbage collector for Crystal. Already at ~89% of Boehm GC throughput with ~0.95x RSS. I also maintain the entire Kemal ecosystem, run Crystal Weekly and Crystal Community, and write free books in Turkish and English. I can't find a job right now. So I'm going full time on Crystal Open Source. I need $1,000/month to keep doing this. If my work has helped you or your company, please consider sponsoring. 👉 github.com/sponsors/sdogruyo… Be part of Crystal's future. 💎 #crystallang

A new release is out: Crystal 1.21.0 🚀 We've reached a major milestone with making Execution Contexts the default concurrency model. crystal-lang.org/2026/07/12/… Read more about the release at crystal-lang.org/2026/07/16/… #crystallang #release

Huge Milestone: There are now over 10,000 Crystal projects 💎📷 @CrystalLanguage #crystallang

Check out this interview with Carl Hörberg of 84codes, where he explains why they chose Crystal to build LavinMQ – a great example of Crystal in production. piped.video/C8kq3KoP97k?si=WMKw… #crystallang @LavinMQ @84codes

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/…

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…

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/eve… 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/…

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

We are thrilled to announce the release of Crystal 1.13.0 crystal-lang.org/2024/07/09/… 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/… #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 helvetic-ruby.ch/talks/#joha…

We are thrilled to announce the release of Crystal 1.12.0 crystal-lang.org/2024/04/09/… 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/… #CrystalLang #website #relaunch

We're reorganizing the sponsoring tiers in OpenCollective: crystal-lang.org/2024/03/25/… 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/… #CrystalLang #Multithreading