A full-featured Crystal web framework that catches bugs for you
...Lucky uses Action classes for handling HTTP requests and responses. The classes map the routes and parameters it handles to a response block. Lucky can generate these classes for you with ’lucky gen.action`. Using a class per action provides very solid automatic error detection, as well as the generation of routing, path, and link helpers and methods.
Amethyst is a Rails inspired web-framework for Crystal language
Amethyst is currently undergoing a re-write from the ground up. We'll be releasing the public roadmap soon. Amethyst is a web framework written in the Crystal language. The goals of Amethyst are to be extremely fast and to provide agility in application development, much like Rails.