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Slim command line interface builder
Featured Shard // Category CLI Builders



Modular, annotation based, API oriented framework with built in param conversion
Featured Shard // Category Web Frameworks

Last 7 Days


An implementation of the Jinja2 template engine in Crystal
Featured Shard // Category Template Engine

Scout gets developers back to coding faster. An intuitive UI streamlines real-time performance insight so you can quickly pinpoint & resolve issues before the customer ever sees them. Start your free trial today!

kemal vs lucky

Popular comparison
  • kemal - Lightning Fast, Super Simple web framework. Inspired by Sinatra
  • lucky - Catch bugs early, forget about most performance issues, and spend more time on code instead of debugging and writing tests


Numerical computing library supporting N-Dimensional data
Featured Shard // Category Science and Data analysis


Fun, testable, and adapter-based email library
Featured Shard // Category Email

Awesome Crystal Newsletter » 189

Top Stories
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Type safe configuration for your classes and modules
Featured Shard // Category Configuration

topaz vs

Popular comparison
  • topaz - A simple and useful db wrapper
  • - Active Record pattern implementation

granite-orm vs jennifer

Popular comparison
  • granite-orm - ORM for Postgres, Mysql, Sqlite
  • jennifer - Active Record pattern implementation with flexible query chainable builder and migration system


Ability to execute crystal code in a fashion similar to Ruby's pry edit
Featured Shard // Category Services and Apps

Last 30 Days


Get CPU, Memory and Network informations of the running OS and its processes
Featured Shard // Category System

grip vs kemal

Popular comparison
  • grip - The microframework for writing powerful web applications.
  • kemal - Lightning Fast, Super Simple web framework. Inspired by Sinatra

amethyst vs kemal

Popular comparison
  • amethyst - A Rails inspired web-framework
  • kemal - Lightning Fast, Super Simple web framework. Inspired by Sinatra


Pure Crystal implementation of BitFields. Handles encoding/decoding of bytes.
Featured Shard // Category Algorithms and Data structures

crystal-dbus vs

Popular comparison
  • crystal-dbus - Bindings to D-Bus
  • - Bindings for nanomsg


Load environment variables from YAML
Synced from the Github list // Category Configuration


Automated browser tests similar to Capybara
Featured Shard // Category Testing

Athena 0.11.0 - Custom annotation & Validator component support

Update Popular Story //


Popular comparison
  • JSON - parsing and generating JSON documents (Crystal stdlib)
  • INI - INI file parser (Crystal stdlib)


Google API wrapper
Featured Shard // Category Third-party APIs

crystalline vs text

Popular comparison
  • crystalline - A collection of containers and algorithms
  • text - A collection of phonetic algorithms

crecto vs kemalyst-model

Popular comparison
  • crecto - Database wrapper, based on Ecto
  • kemalyst-model - ORM Model for the Kemalyst Framework

AMQP 0-9.1, a messaging protocol, implemented by eg. RabbitMQ
Featured Shard // Category Network Protocols vs crystal-newrelic

Popular comparison
  • - Raven is a client for Sentry
  • crystal-newrelic - NewRelic API client

Awesome Crystal Newsletter » 188

Top Stories
  • Apologies for slandering the Jennifer ORM
  • Frustrations with Crystal ORMs
  • Injecting electron apps with Crystal
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Library to handle IPv4 and IPv6 addresses
Featured Shard // Category Networking


An SNMP implementation with version 1, 2c and 3 support
Featured Shard // Category Network Protocols


Comprehensive security for Lucky framework
Featured Shard // Category Framework Components

compression of series of coordinates
Featured Shard // Category Compression