journaltxt - reads Journal.TXT and writes out (auto-builds) a blog (w/ Jekyll posts etc.)

An HTTP client designed for use with JRuby in a threaded environment

json-next - read generation y / next generation json versions (HanSON, SON, JSONX/JSON11, etc.) with comments, unquoted keys, multi-line strings, trailing commas, optional commas, and more

This gem can parse values, validations, documentation, types, groups and conditions of parameters from your puppet modules

A Ruby binding for KAKASI implemented with Fiddle/DL/FFI

Kaminari is a Scope & Engine based, clean, powerful, agnostic, customizable and sophisticated paginator for Rails 3+

kittypedia - (auto-)generate and update pages on cattributes, traits, fancies (normal, exclusive, special editions) and more

kittyverse - helper classes for cattributes, trait types, traits, genes, genomes and more for cryptokitties and copycats

kittyverse-api - web client (helpers) for using the CryptoKitties unofficial (v0) and official (v1) public (HTTP JSON) APIs

kittyverse-graphql - (lite) web client (helpers) for using CryptoKitties (HTTP JSON) GraphQL APIs

KJess is a pure ruby Kestrel client that supports Kestrel's Memcache style protocol.

Klomp is a simple [Stomp] messaging client that keeps your sanity intact. The purpose of Klomp is to be the simplest possible Stomp client. No in-memory buffering of outgoing messages, no fanout subscriptions in-process, no transactions, no complicated messaging patterns. Code simple enough so that when something goes wrong, the problem is obvious. [Stomp]: http://stomp.github.com/

Kronk is a command line swiss-army-knife for HTTP services. With Kronk, you easily parse and segregate data, run diffs between the parsed data from different queries, and easily replay logs and loadtest your HTTP applications. Kronk was made possible by the sponsoring of YP.com.

A set of Rake tasks that provide a framework to help automate the creation and configuration server groups.

Ruby framework for integration with Leadsquared. Leadsquared API: http://apidocs.leadsquared.com/

Wrapper around the C++ api for Leap Motion.

Ruby interface to the Leap Motion Controller (via SWIG)

Ruby interface to the Leap Motion Controller (via WebSocket)

Various tools for OTU clustering

This gem helps doing LEFT JOIN's between ActiveRecord associations