Browse Documentation

github.com/mofumofu3n/reveal.cr

github.com/GrottoPress/rex

A simple i18n adapter interface for Crystal

github.com/Dakad/rexgena.cr

Regular Expression Generation

github.com/giuseongit/rf

github.com/threez/rfc8439.cr

Crystal implementation ChaCha20 stream cipher as well as the Poly1305 authenticator and the AEAD mode defined in rfc8439.

github.com/hugolgst/rich-crystal

📇a simple Crystal extension for Discord Rich Presence

github.com/Alfrederson/milenio-capital

github.com/NaySoares/travel-api

github.com/aluminumio/rightdocuments-cli

CLI for the RightDocuments API. Crystal binary distributed via Homebrew.

github.com/aluminumio/rightdocuments-sdk-crystal-lang

-

github.com/aluminumio/rightrank-cli

RightRank CLI: AI model rankings, recommendations and pricing from your terminal

github.com/geocrystal/ring_area

Calculate the approximate area of the polygon were it projected onto the Earth.

github.com/lukas8219/rinha-de-backend-2025

Crystal, LavinMQ, NGINX, Circuit Breaker

github.com/renanvy/rinha-backend-2024-q1-crystal

Versão em Crystal da rinha de backend 2ª edição 2024/Q1

github.com/akitaonrails/rinhabackend-lucky-crystal-api

github.com/MatheusBasso99/rinha-de-backend-2026

github.com/SeedyROM/crystal-rlp

A native crystal implementation of RLP encoding and decoding

github.com/q9f/rlp.cr

A native library implementing Recursive Lengths Prefixes (RLP) purely for the Crystal programming language.

github.com/jtippett/rns-cr

Crystal port of the Reticulum Network Stack — cryptography-based networking for reliable, encrypted, and authenticated communications over any medium.

github.com/watzon/robots.cr

Simple robots.txt parser for Crystal