Blog

Here you can find detailed announcements for new releases, some interesting use cases, and the rationale behind some of the language's design decisions.

Articles

Brian J. Cardiff 06 Mar 2023

Reveal type in Crystal

Porting reveal_type from Sorbet to Crystal.

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Beta Ziliani 02 Mar 2023

Heads up: Crystal is upgrading its Regex engine

Crystal is upgrading from PCRE to PCRE2

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Mekhla Mukherjee 07 Feb 2023

Introduction: Mekhla Mukherjee, Community Manager

Crystal has a new Community Manager!

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Stephen von Takach Dukai
Martin Pettinati 24 Jan 2023

Automating smart buildings with Crystal: how PlaceOS creates and manages cohesive environments

Stephen Von Takach Dukai, Engineering Lead at PlaceOS, talks about their experience working with Crystal.

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Beta Ziliani 05 Jan 2023

Welcome 2023!

The new year comes with lots of good news.

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Beta Ziliani 13 Jun 2022

Latests news from the Crystal Team

A sneak peak of what kept the team busy in the past months

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Brian J. Cardiff 16 Feb 2022

bdw-gc coroutines support

The support for multi-thread coroutines was gained by allowing the user to control the stack bottom of each thread.

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Beta Ziliani 29 Dec 2021

Crystal's interpreter – A very special holiday present

A little F.A.Q. about this new feature

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Beta Ziliani 30 Sep 2021

Preparing for Crystal 1.2

Lowering 32-bit support in favor of more popular platforms

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Beta Ziliani 24 Aug 2021

Community moderators

Contributors may level up their involvement with the project with the new role.

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Johannes Müller 13 Aug 2021

Installing specific versions of Crystal's binary packages

Binary packages are now available for older releases on the Open Build Service

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Jonne Hass 04 Jun 2021

IRC channel moved to Libera Chat

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Beta Ziliani 01 Jun 2021

Behind the scenes of the past two months

What’s been going on after the 1.0 release

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Johannes Müller 30 Apr 2021

Announcing new apt and rpm repositories

Binary packages built and distributed on the Open Build Service

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Beta Ziliani 22 Apr 2021

Announcing Crystal 1.0 Conference

Let's celebrate the release

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Nicolás di Tada 22 Mar 2021

Crystal Core Team Announcements

A lot has been going on in the Crystal Core Team ...

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Brian J. Cardiff 16 Dec 2020

Raw Crystal 2020

Watch all the talks of the event on YouTube

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Lorenzo Barasti 19 Nov 2020

Organising a Crystal conference in 2020

An overview of what you can expect at Raw Crystal 2020 and some insight on the organisation process.

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Brian J. Cardiff 24 Aug 2020

Announcing new apt and rpm repositories

We are moving to Bintray for apt and rpm repositories and we are adding stable, unstable, nightly channels.

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Brian J. Cardiff 20 Aug 2020

Preparing our shards for Crystal 1.0

How we can prepare our shards for Crystal 1.0 or for upstream changes of dependencies at any time.

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Brian J. Cardiff 06 Aug 2020

Shards 0.12.0 released!

Shards has a new development release.

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Brian J. Cardiff 03 Mar 2020

Towards Crystal 1.0

The upcoming efforts to release Crystal 1.0

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Johannes Müller 02 Feb 2020

Alpine-based Docker images

Using Crystal with brand new Docker images based on Alpine Linux

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Johannes Müller 02 Jan 2020

Introducing shardbox.org

A platform for discovering the shards ecosystem.

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Juan Wajnerman
Brian J. Cardiff 06 Sep 2019

Parallelism in Crystal

Use more of your core power

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Brian J. Cardiff 19 Jun 2019

Snapcraft Summit Montréal

Updates in Crystal distributions and other news

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Johannes Müller 08 May 2019

Formatting pretty numbers for humans

Crystal 0.28.0 comes with new features for formatting neat numbers for human readers.

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Brian J. Cardiff 30 Apr 2019

Watch: Run, change, build, repeat

How to improve the development cycle with a watch experience

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Brian J. Cardiff 04 Sep 2018

Using CircleCI 2.0 for your Crystal projects

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Brian J. Cardiff 09 Mar 2018

Crystal Automated Release

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Paul Smith 06 Feb 2018

Lucky with Crystal - Fewer Bugs, Better Performance, Incredible Productivity

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Robert Carpenter 25 Jan 2018

Amber - Crystalizing Rails and Phoenix

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Mark Siemers 08 Jan 2018

Top 5 Reasons for Ruby-ists to Use Crystal

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Nicolás di Tada 19 Dec 2017

This is not a new year’s resolution

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Serdar Doğruyol 03 Nov 2017

Crystal Survey 2017 Results

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Peter Schols
Ivo Balbaert 27 Oct 2017

Diploid and Crystal

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NeuraLegion 25 Sep 2017

NeuraLegion and Crystal

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Serdar Doğruyol 31 Jul 2017

Launching the 2017 State of Crystal Survey

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María Inti David 23 Mar 2017

Announcing Crystal CodeCamp SF2017

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Santiago Palladino 24 Feb 2017

State of Crystal at 0.21

What did we do since new year?

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Leonard Schütz 06 Jan 2017

The Charly programming language

Guest blog post by Leonard Schütz

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Santiago Palladino 29 Dec 2016

Crystal new year resolutions for 2017: 1.0

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Brian J. Cardiff 26 Dec 2016

INSERT INTO shard VALUES ("crystal-db")

One db api to rule them all

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Brian J. Cardiff 09 Sep 2016

A story of compromises and types

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Ary Borenzweig 15 Jul 2016

Fibonacci benchmark

Ruby vs. Crystal

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Brian J. Cardiff 28 Jun 2016

Split the repo!

where the git...

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Brian J. Cardiff 26 May 2016

Heroku Buildpack

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María Inti David 18 Feb 2016

Buenos Aires Crystal Meetup

First meetup in Argentina

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Ary Borenzweig 24 Dec 2015

The future of Crystal

A short story

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Brian J. Cardiff 05 Sep 2015

Crystal tools

Tools for Atom and everybody

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Ary Borenzweig 24 Aug 2015

It's a typeof magic

It's magic!

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Ary Borenzweig 01 Apr 2015

Auto

A smarter compiler

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Ary Borenzweig 04 Mar 2015

Internals

Memory representation

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Ary Borenzweig 06 Dec 2014

Another language

What if...

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Ary Borenzweig 27 Apr 2014

Type inference rules

Part 2 of the type inference series

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Juan Wajnerman 05 Dec 2013

Garbage Collector

Enabled the Boehm GC

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Ary Borenzweig 14 Nov 2013

Good bye Ruby Thursday

Bootstraped the compiler

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Brian J. Cardiff 23 Sep 2013

Type inference (part 1)

How type inference works

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Ary Borenzweig 15 Sep 2013

to_proc

Shortcut syntax for writing one-argument blocks

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Ary Borenzweig 04 Sep 2013

Happy birthday, Crystal!

Crystal is one year old

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Ary Borenzweig 13 Jul 2013

Null Pointer Exception

Crystal doesn't let you have a Null Pointer Exception

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Ary Borenzweig
Juan Wajnerman 10 Jul 2013

Hello World

The famous Hello World program written in different ways in Crystal

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More articles

Release Notes

Crystal 1.7.3 is released! 07 Mar 2023
Crystal 1.7.2 is released! 23 Jan 2023
Crystal 1.7.1 is released! 17 Jan 2023
Crystal 1.7.0 is released! 09 Jan 2023
Crystal 1.6.2 is released! 03 Nov 2022
Crystal 1.6.1 is released! 21 Oct 2022
Crystal 1.6.0 is released! 06 Oct 2022
Crystal 1.5.1 is released! 08 Sep 2022
Crystal 1.5.0 is released! 06 Jul 2022
Crystal 1.4.1 is released! 22 Apr 2022
Crystal 1.4.0 is released! 06 Apr 2022
Crystal 1.3.2 is released! 18 Jan 2022
Crystal 1.3.1 is released! 13 Jan 2022
Crystal 1.3.0 is released! 06 Jan 2022
Crystal 1.2.2 is released! 10 Nov 2021
Crystal 1.2.1 is released! 21 Oct 2021
Crystal 1.2.0 is released! 14 Oct 2021
Crystal 1.1.1 is released! 27 Jul 2021
Crystal 1.1.0 is released! 16 Jul 2021
Crystal 1.0 - What to expect 22 Mar 2021
Crystal 0.36.1 released! 02 Feb 2021
Crystal 0.36.0 released! 26 Jan 2021
Crystal 0.35.1 released! 19 Jun 2020
Crystal 0.35.0 released! 09 Jun 2020
Crystal 0.34.0 released! 06 Apr 2020
Crystal 0.33.0 released! 14 Feb 2020
Crystal 0.32.1 released! 18 Dec 2019
Crystal 0.32.0 released! 11 Dec 2019
Crystal 0.31.1 released! 30 Sep 2019
Crystal 0.31.0 released! 23 Sep 2019
Crystal 0.30.1 released! 12 Aug 2019
Crystal 0.30.0 released! 01 Aug 2019
Crystal 0.29.0 released! 05 Jun 2019
Crystal 0.28.0 released! 17 Apr 2019
Crystal 0.27.2 released! 05 Feb 2019
Crystal 0.27.1 released! 30 Jan 2019
Crystal 0.27.0 released! 01 Nov 2018
Crystal 0.26.1 released! 27 Aug 2018
Crystal 0.26.0 released! 09 Aug 2018
Crystal 0.25.1 released! 28 Jun 2018
Crystal 0.25.0 released! 15 Jun 2018
Crystal 0.24.2 released! 09 Mar 2018
Crystal 0.24.1 released! 23 Dec 2017
Crystal 0.23.1 released! 13 Jul 2017
Crystal 0.23.0 released! 29 Jun 2017
Crystal 0.22.0 released! 01 Apr 2017
Crystal 0.21.0 released! 21 Feb 2017
Crystal 0.20.5 released! 22 Jan 2017
Crystal 0.20.4 released! 07 Jan 2017
Crystal 0.20.3 released! 24 Dec 2016
Crystal 0.20.1 released! 06 Dec 2016
Crystal 0.20.0 released! 22 Nov 2016
Crystal 0.18.0 released! 14 Jun 2016
Crystal 0.17.0 released! 17 May 2016
Crystal 0.16.0 released! 05 May 2016
Crystal 0.15.0 released! 02 Apr 2016
Crystal 0.14.1 released! 21 Mar 2016
Crystal 0.13.0 released! 07 Mar 2016
Crystal 0.12.0 released! 16 Feb 2016
Crystal 0.11.0 released! 23 Jan 2016
Crystal 0.10.0 released! 23 Dec 2015
Crystal 0.9.1 released! 30 Oct 2015
Crystal 0.9.0 released! 16 Oct 2015
Crystal 0.7.7 released! 04 Sep 2015
Crystal 0.7.5 released! 30 Jul 2015
Crystal 0.7.4 released! 23 Jun 2015
Crystal 0.7.3 released! 07 Jun 2015
Crystal 0.7.2 released! 26 May 2015
Crystal 0.7.0 released! 30 Apr 2015
Crystal 0.6.1 released! 04 Mar 2015
Crystal 0.6.0 released! 12 Feb 2015
Crystal 0.5.9 released! 07 Feb 2015
Crystal 0.5.6 released! 31 Dec 2014
Crystal 0.5.4 released! 04 Dec 2014
Crystal 0.1.0 released! 19 Jun 2014

More release notes