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Re:Crystal 1.0 – What to expect by robrtsql on Monday March 22, 2021 @03:34PM (#26545649)
I think they meant this web framework: https://amberframework.org/

There are two pretty big web frameworks in the Crystal world right now, one is Kemal which strives to be the Sinatra or Flask of the Crystal world (lightweight, supporting plugins), and the other is Crystal which is trying to be the Ruby on Rails or Django of the Crystal world (full-featured, opinionated).

Re:Crystal 1.0 – What to expect by blacksmoke16 on Monday March 22, 2021 @03:40PM (#26545740)
There are also other options: https://github.com/veelenga/awesome-crystal#web-frameworks.

https://athenaframework.org is pretty unique. It's one of the more flexible frameworks IMO. It was inspired by Symfony and Spring, so takes a bit of a different approach as most other frameworks come from a more Ruby background.

Re:Crystal 1.0 – What to expect by mfkp on Monday March 22, 2021 @03:37PM (#26545695)
The other main one is https://luckyframework.org/ (also going for more of a full-featured Rails type framework)