Qiitakun is a good CLI tool to manipulate Qiita.

Qiniu Cloud Storage SDK for Ruby. See: http://docs.qiniutek.com/v1/sdk/ruby/

Provides support for payment operations using QiwiPay WPF and API services

Parse Qonto transations listing into an OFX file

A Ruby Client to interact with the Qordoba V2 API. The SDK gives developers programmatic access to everything on the Qordoba web platform in an easy to use interface.

QQ oauth2

A qq client for oath2 and API with a omniauth strategie

App push service by Tencent XG

Scan quay.io for vulnerabilities in running docker containers.

Qubell API wrapper

Quby is a Rails engine that can render and update answers for questionnaires defined in a custom DSL.

Quickblox ruby sdk.

A Ruby wrapper for the Quickmail 3PL fulfillment company API

Quinoa is a light and nutritive framework that allows automate service level tests using object model

Provides a high-level client for the Quova API

QVO client

r18.com client

Redmine Rest Client written in Ruby.

API Wrapper for RackConnect v3 service from Rackspace

Rack middleware for creating faking responses for HTTP web services that an application under test communicates with