bool_attr_accessor is a gem for creating boolean style attributes.

A somewhat fancy observer pattern library with features like named events and scoped subscriptions.

Allows to use alternative words endings: -ise instead of -ize etc. Defines `is_an?` as an alias of the is_a? method. Provides a module to use `initialise` in your classes.

Fast transliteration of Serbian Cyrillic to Latin and back. Brzo preslovljavanje ćirilice u latinicu i obratno.

Fast native implementation of byte buffer intended to be used as part of frame based protocol PDU handling code. Can serve as drop in replacement for Ione::ByteBuffer and used in DataStax Cassandra Ruby driver.

A small collection of caches with good performance and hash-like access patterns

`cassie-queries` is a lightweight interface adapter allowing easy use of the functionality provided by the `cassandra-driver`.

Celerbrake Ruby is a plain Ruby notifier for Celerbrake (https://celerbrake.com), a cloud-based, wire-compatible error-tracking service. It provides a minimalist API for sending any Ruby exception to a Celerbrake dashboard. The library is extremely lightweight and suits plain Ruby applications well. For apps built with Rails, Sinatra or any other Rack-compliant framework we offer the celerbrake gem (https://github.com/celerbrake/celerbrake), which reports unhandled exceptions automatically and integrates with Resque, Sidekiq, Delayed Job and many more. Celerbrake Ruby began as a fork of airbrake-ruby (https://github.com/airbrake/airbrake-ruby) and remains wire-compatible with the Airbrake v3 notice API; the default host points at Celerbrake rather than a third-party service.

File type identification library.

A simple stash

A lightweight Ruby client for ClickHouse with optional ActiveRecord integration. Provides a simple interface for querying, inserting, and managing ClickHouse databases.

Clin provide an advance way to define complex command line interface.

Tool for defining types or operations that are composed from other types.

Implementation of the Conference Track Management kata

Console Utils provides several handy tools to use in Rails Console.

Simple cooperative interactors for Ruby

Dead simple configurable user notifications with little overhead.

CrustJSONEncoder is a JSON encoder for Ruby on Rails.

Cuckoo Filter implementation in Ruby

A Ruby gem with a C extension for high-performance scanning and redaction of 85 sensitive patterns — API keys, tokens, credentials, IBANs, national IDs, emails, phone numbers, and PII from 15+ countries. Optional Logger formatter, Rails filter_parameters adapter, and Rack middleware. Designed to sanitize text before sending to LLMs, logging systems, or any public/third-party API.