Browse Shards

github.com/maiha/core-ext.cr

Personal but versatile core class extensions for Crystal

github.com/lbguilherme/clear

Clear ORM is an advanced ORM focusing on PostgreSQL

github.com/konovod/cannon

Lightning fast data serialization and RPC for Crystal

github.com/kojix2/spinner

Terminal Spinner for Crystal Programming Language

github.com/kojix2/crystal-readline

Crystal bindings to GNU Readline Library

github.com/kalinon/colors-and-gradients

A library focused on working with colors and gradients.

github.com/kalinon/clim

Slim command line interface builder for Crystal.

github.com/icyleaf/mime.cr

**Unmaintained** Mime types for Crystal.

github.com/iainmon/adapted-hedron

A simple OOP UI library, with custom markup integration.

github.com/greyblake/crystal-kiwi

A unified Crystal interface for key-value stores.

github.com/greenbigfrog/discordcr

Minimalist Discord library for Crystal. (Still WIP, but usable)

github.com/greenbigfrog/crystal-pg

a postgres driver for crystal

github.com/freyamade/noir

Syntax Highlight Library for Crystal

github.com/freyamade/discordcr

Minimalist Discord library for Crystal. (Still WIP, but usable)

github.com/franciscoadasme/mm

github.com/elbywan/open_api.cr

Type safe OpenAPI spec library

github.com/confact/jq.cr

thin JSON::Any wrapper to emulate jq for crystal

github.com/amberframework/callback

A Crystal library for defining and invoking callbacks.

github.com/aloli-crystal/combine-pdf

ISO-compatible Crystal port of the Ruby gem `combine_pdf` v1.0.31 (April 2025). Provides the canonical `CombinePDF.new` / `CombinePDF.load` / `CombinePDF.parse` entry points plus the `CombinePDF::PDF` instance API (`<<`, `>>`, `insert`, `remove`, `pages`, `page_count`, `new_page`, `title=`, `author=`, `number_pages`, `save`, `to_pdf`). Crystal-specific bonuses, kept from v0.2 : * `CombinePDF.merge` — one-shot multi-PDF concatenation * `CombinePDF.number` — page numbering with A4/Letter awareness and partition-aware intra-numbering (fixes the US Letter hardcoding bug of the Ruby gem's `number_pages`) * `CombinePDF.assemble` — merge + number in a single call (booklet of partitions use case) Versioning: 4th digit increments per additive iteration on top of the synchronised Ruby gem version.

github.com/wstein/cr-xxhash

Crystal bindings to xxHash: fast non-cryptographic hash algorithm Supports XXH32, XXH64, XXH3 (64/128-bit) with SIMD optimizations