prax.cr

Rack proxy server for development (Crystal port)

minitest.cr

Test Unit for the Crystal programming language

frost

Full Featured Web Framework for the Crystal Programming Language

earl

Service Objects for Crystal (Agents, Artists, Supervisors, Pools, ...)

http2

HTTP/2 Protocol Implementation for the Crystal Language

sdl.cr

SDL2 bindings for Crystal

pool

Generic (connection) pools for Crystal

selenium-webdriver-crystal

Selenium Webdriver client for the Crystal programming language

artanis

Sinatra-like DSL for the Crystal language (abusing macros)

panzer

Multi-process, zero-downtime service monitor for Crystal

posix

POSIX/C bindings generator for the Crystal programming language

android.cr

Create Android applications using Crystal and the NDK

java.cr

Java Native Interface (JNI) bindings (and generator) for Crystal

scrypt-crystal

Crystal bindings for Colin Percival's scrypt key derivation function

crystal_library

Static/Shared libraries written in Crystal (Proof of Concept)

crystal-cmark

Crystal wrapper for libcmark, the reference CommonMark C library

rome

shards-registry

siphash.cr

SipHash family of pseudo random functions implemented in Crystal

ewkb