Crystal

sentrycrystal-china/sentry

A development tool that automatically rebuilds and restarts Crystal applications when source files change.

mqtt-client.cr84codes/mqtt-client.cr

A lightweight MQTT client library for the Crystal programming language.

iterm2toddsundsted/iterm2

A Crystal library for displaying images in the terminal using the iTerm2 Inline Images Protocol.

cyclonedx-crhahwul/cyclonedx-cr

A Crystal tool for generating CycloneDX Software Bill of Materials (SBOM) from Crystal shard projects.

Athena Negotiationathena-framework/negotiation

A framework-agnostic library for HTTP content negotiation based on RFC standards.

cmacspider-gazelle/cmac

A Crystal implementation of the Cipher-based Message Authentication Code (CMAC) for data integrity protection.

crystal-gslkonovod/crystal-gsl

Crystal language bindings for the GNU Scientific Library (GSL), providing access to numerical and scientific computing functions.

git-repositoryplace-labs/git-repository

A Crystal shard for inspecting remote Git repositories without downloading full history.

v4l2.crspider-gazelle/v4l2.cr

Crystal language bindings for Video4Linux2 (v4l2) to capture video frames from Linux devices with minimal latency.

crystal-swapisb89/crystal-swapi

A Crystal language client library for interacting with the Star Wars API (SWAPI).

webdriver_pumpbwilczek/webdriver_pump

A Page Object Model library for Crystal built on top of selenium.cr, inspired by Ruby's WatirPump and SitePrism.

multiset.crtcrouch/multiset.cr

A multiset (bag) data structure implementation for the Crystal programming language.

knxspider-gazelle/knx

A Crystal library for constructing KNX protocol datagrams to communicate with KNX network devices.

digest-authspider-gazelle/digest-auth

A Crystal shard for HTTP digest authentication, enabling communication with servers that implement digest auth.

ynab.crjaredsmithse/ynab.cr

A Crystal shard providing a comprehensive API client for the You Need A Budget (YNAB) service.

ntlmspider-gazelle/ntlm

A Crystal language shard for implementing NTLM authentication in HTTP clients.

tmdb.crmmacia/tmdb.cr

A Crystal wrapper for The Movie Database (TMDb) API, providing easy access to movie, TV, and people data.

Athena Specathena-framework/spec

A collection of helpful Spec-compliant testing utilities for the Athena Framework.

host_metatoddsundsted/host_meta

A Crystal client for retrieving Web Host Metadata as defined by RFC 6415.

nlopt.crkonovod/nlopt.cr

A Crystal language wrapper for the NLopt nonlinear optimization library, providing access to 43 optimization algorithms.

primewontruefree/prime

A Crystal library for generating prime numbers with a simple iterator interface.

gpio.crspider-gazelle/gpio.cr

Crystal language bindings for Linux GPIO character device interface (libgpiod).

SPAKE2+spider-gazelle/SPAKE2_plus

A Crystal implementation of the SPAKE2+ Password Authenticated Key Exchange protocol, used by the Matter smart home standard.

graphql.crgarymardell/graphql.cr

A low-level GraphQL implementation for Crystal that closely follows the spec, designed for dynamic schema generation.

crystal-baseruivieira/crystal-base

A CentOS-based Docker image for Crystal programming language development.

public_suffixtoddsundsted/public_suffix

A Crystal library for parsing and working with the Public Suffix List to identify domain name suffixes.

hashrcrystal-china/hashr

A tiny Crystal library for easier JSON response testing and object modeling.

mac-addressautomatico/mac-address

A Crystal library for parsing, validating, and converting MAC addresses between multiple standard formats.

barionSEbbaDK/barion

A compiled fast prompt for Linux shells with git status, nix-shell, and exit code display.

amazoniterjnienaber/amazonite

An unofficial AWS SDK for the Crystal programming language, providing type-safe access to popular AWS APIs.

serf-handler.crwyhaines/serf-handler.cr

A Crystal library for building compiled, distributable Serf handler binaries.

link-headerspider-gazelle/link-header

A Crystal language library for parsing HTTP Link headers from responses and headers.

stompspider-gazelle/stomp

A Crystal language implementation of the STOMP protocol for communicating with STOMP-supporting devices.

HKDFspider-gazelle/HKDF

A Crystal language implementation of the HMAC-based Extract-and-Expand Key Derivation Function (HKDF) for cryptographic key derivation.

s2_cellsspider-gazelle/s2_cells

A Crystal library for mapping latitude and longitude coordinates to S2 Cells for geospatial indexing.

verhoeffspider-gazelle/verhoeff

A Crystal language implementation of the Verhoeff checksum algorithm for error detection in numeric data.