amber ☆
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Description:
Crystal web framework. Bare metal performance, productivity and happiness
Type: Formula  |  Latest Version: 1.4.1@2  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  @amberframework  |  formulae.brew.sh
Category: Developer tools
Tags: web-framework crystal backend api real-time
Install: brew install amber
About:
Amber is a web framework for the Crystal programming language, designed to provide a robust and efficient environment for building web applications. It leverages Crystal's native performance to deliver high-speed request handling while offering an expressive syntax similar to Ruby. The framework includes an MVC architecture, built-in ORM support, and real-time communication capabilities via WebSockets.
Key Features:
  • High performance with native Crystal compilation
  • MVC architecture with built-in ORM (Granite)
  • Real-time WebSocket support
  • CLI tool for rapid application scaffolding
  • Integrated testing framework
Use Cases:
  • Building high-performance RESTful APIs and microservices
  • Developing real-time web applications with live updates
  • Creating full-stack web applications with rapid development cycles
Alternatives:
  • Kemal – Lightweight Crystal web framework, more minimal compared to Amber's full-stack approach
  • Rails – Ruby framework with similar MVC structure but slower performance due to interpreted nature
  • Phoenix – Elixir framework offering similar real-time capabilities and performance characteristics
License: MIT
Dependencies: bdw-gc, crystal, libevent, libyaml, openssl@3, pcre2, sqlite
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, sonoma, ventura, arm64_linux, x86_64_linux
Version History
Detected Version Rev Change Commit
Sep 13, 2025 10:06am 2 VERSION_BUMP 2cba1c41
Jan 8, 2025 9:47am 2 VERSION_BUMP 63109d79
Sep 14, 2024 11:01pm 1 VERSION_BUMP 66fdfb82
Dec 9, 2023 8:30pm 1 VERSION_BUMP 1aacb326
Aug 12, 2023 10:05pm 0 VERSION_BUMP 73baacfe
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