Kitchen-Pulumi makes it easy to add integration tests to Pulumi-based infrastructure projects.

Test Kitchen driver for static hosts

A Test Kitchen Transport plugin that streamlines the file transfer phase to Linux hosts.

Creates VMs in Virtual Machine Manager for both Windows and Linux

A collection of middleware for use with Faraday.

Gem for the PayPonty API

This gem provides an interface for uploading images to the Kland Image host, via rest-client.

If you need to develop more than one application and they actively communicate each other.

Screenshots, made easy.

This is a Ruby implementation of the k-means++ algorithm for data clustering. In other words: Grouping a bunch of X, Y points into K groups.

A gem for processing KM exports

CLI for encrypting and decrypting data using Amazon KMS

Command line interface for the SQLite3 database of KMyMoney

This gem contains command-line utility for solving 0/1 knapsack problem using branch-and-bound method, dynamic programming, simple heuristic (weight/price) and fully polynomial time approximation scheme. It can measure CPU and wall-clock time spent by solving a problem, compute relative error of the result and generate graphs from those values.

One plugin to provision them all! This plugin allows the Chef developer to provision Chef clients on all major clouds using the RightScale platform.

Manages multiple knife.rb configurations for Chef

KnuVerse Knufactor Ruby SDK

Constructs KNX standard datagrams that make it easy to communicate with devices on KNX networks

Easy interface for the Koha ILSDI API (https://github.com/Koha-Community/Koha/blob/master/C4/ILSDI/Services.pm)

Most web applications have a lot of before/after hooks that occur when working with objects: sending a welcome email on registration, incrementing/decrementing counter caches, trigger validation on remote web services. When implemented using callbacks, all these occur without the developer knowing about them. A simple change in one area of the code can have a huge impact somewhere else. Inspiration for this came from http://blog.teksol.info/2010/09/28/unintented-consequences-the-pitfalls-of-activerecord-callbacks.html and http://jamesgolick.com/2010/3/14/crazy-heretical-and-awesome-the-way-i-write-rails-apps.html