Inum(enumerated type of Integer) provide a java-Enum-like.

A Ruby authorization library

The Jaccard Coefficient Index is a measure of how similar two sets are. This library makes calculating the coefficient very easy, and provides useful helpers.

A Chef convergence integration test harness

Ruby implementation of the JSON Web Token (JWT) standard, RFC 7519

provides soft delete. Kakurenbo is a re-implementation of paranoia and acts_as_paranoid for Rails4 and 3. implemented a function that other gems are not enough. The usage of the Kakurenbo is very very very simple. Only add `deleted_at`(datetime) to column. Of course you can use `acts_as_paranoid`.In addition, Kakurenbo has many advantageous.

The Ruby library for interfacing with the Twitch.tv API including users, channels, streams, games, and videos.

kitchen-terraform is a set of Test Kitchen plugins for testing Terraform configuration

A simple set of module functions to normalize, validate, and convert common library standard numbers

An opinionated wrapper around libuv for Ruby

Linnaeus provides a redis-backed Bayesian classifier. Words are stemmed, stopwords are stopped, and redis is used to allow for persistent and concurrent training and classification.

LocalBus is a lightweight yet powerful pub/sub system for Ruby applications that enables decoupled communication within a single process. It offers both non-blocking I/O and thread pool processing modes, robust error handling, and fine-grained concurrency controls. Perfect for organizing event-driven architectures, handling background jobs, and managing complex workflows without external dependencies."

Tools for testing the Calabash Toolchain locally, on Travis CI, and Jenkins

Domain driven oriented microservice framework.

Mactag is a DSL to create Ctags files for Ruby/Rails

MagicEnum is a simple ActiveRecord plugin that makes it easier to maintain ENUM-like attributes in your models.

Marvin is a library (also usable in framework / application form) that makes it simple and fast to build applications around IRC. With an emphasis on making common tasks (e.g. replies, bots using method call style syntax and the like) easy, whilst still making it possible to do more complex thing (1 connection, N worker processes, Multiple servers, etc) it aims to make working with IRC in an evented fashion fun and easy for all rubyists.

This gem extends the Beaker DSL for the purpose of changing things on a Puppet master

"MDArray is a multi dimensional array implemented for JRuby inspired by NumPy (www.numpy.org) and Masahiro Tanaka´s Narray (narray.rubyforge.org). MDArray stands on the shoulders of Java-NetCDF and Parallel Colt. At this point MDArray has libraries for linear algebra, mathematical, trigonometric and descriptive statistics methods. NetCDF-Java Library is a Java interface to NetCDF files, as well as to many other types of scientific data formats. It is developed and distributed by Unidata (http://www.unidata.ucar.edu). Parallel Colt (http://grepcode.com/snapshot/repo1.maven.org/maven2/net.sourceforge.parallelcolt/ parallelcolt/0.10.0/) is a multithreaded version of Colt (http://acs.lbl.gov/software/colt/). Colt provides a set of Open Source Libraries for High Performance Scientific and Technical Computing in Java. Scientific and technical computing is characterized by demanding problem sizes and a need for high performance at reasonably small memory footprint." For more information and (some) documentation please go to: https://github.com/rbotafogo/mdarray/wiki

An active record mention system developed using ruby on rails applying domain driven design and test driven development principles.