Crystal

syslog.crchris-huxtable/syslog.cr

Adds syslog functionality to Crystal via LibC bindings for system logging.

pingerspider-gazelle/pinger

A Crystal microlibrary for ICMP ping requests that shells out to the system ping command to avoid sudo requirements.

Athena Dependency Injectionathena-framework/dependency-injection

A robust dependency injection service container framework for managing object dependencies and services.

blackjack-crgdonald/blackjack-cr

A command-line Blackjack game implementation written in the Crystal programming language.

toon-crystalmamantoha/toon-crystal

Crystal implementation of the TOON format, a compact serialization format designed to reduce token usage for LLM input.

CrSignalsfirejox/CrSignals

A signals/slots library for the Crystal programming language enabling type-safe event-driven communication.

sslscan.crNeuraLegion/sslscan.cr

A Crystal shard wrapper for the sslscan utility to perform SSL/TLS security scans.

version_toolsanicholson/crystal-version-tools

Crystal macros for switching behavior at compile-time based on semantic version comparisons.

polylines.crBuonOmo/polylines.cr

A Crystal implementation of Google's polyline algorithm for encoding and decoding geographic coordinates.

MatterCrystal-Matter/matter

A complete Crystal language implementation of the Matter protocol for building interoperable smart home devices.

port_ruby_to_crystalcrystal-china/port_ruby_to_crystal

A Ruby regex script that automates the conversion of Ruby code to Crystal syntax, reducing porting friction.

pledge.crchris-huxtable/pledge.cr

A Crystal shard that adds OpenBSD's pledge(2) system call for process sandboxing and security hardening.

fiber_metrics.crdidactic-drunk/fiber_metrics.cr

Track runtime, wait time, and memory allocations per Fiber, method, or block in Crystal applications.

observableTPei/observable

A simple implementation of the Observer pattern in Crystal, loosely based on Ruby's Observable module.

web_fingertoddsundsted/web_finger

A Crystal client library for querying WebFinger resources according to RFC 7033.

simple_retryspider-gazelle/simple_retry

A Crystal library for retrying code blocks with configurable error handling and exponential backoff.

crystal-hunspellmamantoha/crystal-hunspell

Crystal language bindings for the Hunspell spell-checking and morphological analysis library.

syringeBonemind/syringe

A simple and basic dependency injection shard for the Crystal programming language.

crystal-darkskysb89/crystal-darksky

A Crystal language wrapper for the Dark Sky weather API, providing type-safe access to weather forecasts.

crumltamdaz/cruml

A UML class diagram generator for Crystal projects, using d2 for visualization.

augeas.crfernandes/augeas.cr

Crystal C bindings for Augeas, enabling configuration file parsing and manipulation.

mDNSspider-gazelle/mdns

A Crystal library for mDNS and DNS-SD service discovery and device lookup on local networks.

mass-specc910335/mass-spec

A Crystal library for fast web API testing by using IO::Memory instead of TCPServer.

tssc.crSija/tssc.cr

A Crystal shard for parsing and serializing Time::Span objects to and from human-readable strings.

pinboard.croz/pinboard.cr

A Crystal language client library for interacting with the Pinboard bookmarking service API.

envyablephilnash/envyable.cr

A Crystal library that loads YAML configuration files into environment variables for clean development setups.

Athena Validatorathena-framework/validator

A Crystal library for validating objects and values with a flexible, extensible rule system.

luajit.crmdwagner/luajit.cr

LuaJIT bindings for Crystal programming language, enabling Lua scripting and interoperability.

port_midijimm/crystal_port_midi

Crystal C bindings for the PortMIDI cross-platform MIDI I/O library.

GDAXmccallofthewild/gdax

A Crystal library for interacting with GDAX's REST and WebSocket APIs to trade cryptocurrencies.

surrealdb.cryorci/surrealdb.cr

An unofficial SurrealDB driver for Crystal, providing HTTP and WebSocket clients for database operations.

connect-proxyspider-gazelle/connect-proxy

A Crystal implementation of the HTTP CONNECT method for HTTP tunneling and proxy support.

secure-remote-passwordspider-gazelle/secure-remote-password

A pure Crystal implementation of the Secure Remote Password protocol (SRP-6a) for secure password authentication.

crunitsspider-gazelle/crunits

A Crystal library for physical quantity and unit of measure conversion, comparison, and mathematical operations.

crystal-gqlitsezc/crystal-gql

A complete GraphQL client shard for the Crystal language, inspired by Apollo Client, with error handling and planned caching, authentication, and subscriptions.

secrets-envspider-gazelle/secrets-env

Extends Crystal's ENV module to read secrets from Docker, Kubernetes, and other orchestration tools.