A Rails version of jQuery Mask Plugin that make masks on form fields and HTML elements easy

jQuery Placeholder for the Rails asset pipeline

JRuby Mahout is a gem that unleashes the power of Apache Mahout in the world of JRuby. Mahout is a superior machine learning library written in Java. It deals with recommendations, clustering and classification machine learning problems at scale. Until now it was difficult to use it in Ruby projects. You'd have to implement Java interfaces in Jruby yourself, which is not quick especially if you just started exploring the world of machine learning.

Ruby wrapper for JSHint. The main difference from jshint gem it does not depend on Java. Instead, it uses ExecJS

JSON API Swagger Doc Generator

An implementation of RFC 6902: JSON Patch.

Jump is a tool that allows you to quickly change directories in the bash and zsh shells using bookmarks. Thanks to Jump, you won't have to type those long paths anymore. Jump was inspired by go-tool by ActiveState (http://code.google.com/p/go-tool/).

Automation Framework for Junos/NETCONF: Facts, Providers, and Utils

Utilities for integrating jupyter and rails.

kakurenbo-puti provides an ActiveRecord-friendly soft-delete gem. This gem does not override methods of ActiveRecord. I think that kakurenbo-puti is cho-iketeru! (very cool!)

Generate passwords using KeePass password generator patterns

A library for parsing equations into an abstract syntax tree for evaluation

Keyboard firmware generator using qmk_firmware - from Fusion JSON

Keycloak Admin REST API client written in Ruby

Rack middleware that validates the Keycloak JWT access token carried by every request of a Ruby on Rails API. It verifies the token signature against the realm public keys, exposes the authenticated user, its roles and the custom attributes of the token to the controllers, and lets some routes opt out of authentication.

Generic library to parse GMail-style search strings for keyword/value pairs; supports definition of valid keywords and handling of quoted values.

API toolkits for Japanese e-Gov system

kintone API client for Ruby.

KISSmetrics ruby API gem

Universal knife verbs that work with your Chef repository