A command line utility for Interstate, in Ruby using Thor

A utility gem with basic interswitch payment functionalities

A full featured wrapper for interacting with the base Google Data API, including authentication and basic object handling

A Ruby wrapper for the jibeset REST and Search APIs

Generate Rails workflow engine from mind map: Freemind

Oauth and OpenID made dead simple

Posting number of karaages you eat to Karaage.click with life log service.

API wrapper for Kekeewin on Scouting.io.

A friendly Ruby interface to the Ketra API

Ruby client for Keystok service. https://keystok.com

Integrate the Kinde API into any ruby-based applications, Rails or non-Rails

kintone API client for Ruby.

Frontend libraries implement OAuth2 flows that authenticate the user with your SPA, but are only part of the picture. If you're storing user data on a backend, you'll need to authenticate them on both the frontend and the backend. That's what Oauth2 Authorization Code Request does, with PKCE thrown in for added security. This gem provides the backend authorization needed, taking in a verification request and logging the user in via JWT with Knock. If you're using Vue/React/etc with a frontend authorization library like @nuxt/auth, and you're running Rails in API mode for your backend, this gem completes the picture.

KonoMailup is a Mailup layer for rails applications that provides configuration and saving of user tokens; with mailup gems for autentication/authorization and api connector

Kuvera API wrapper

Authlogic OAuth2 is an extension of the Authlogic library to add OAuth2 support. OAuth2 can be used to allow users to login with their Facebook credentials.

Identity herding with OAuth

OAuth2 (Facebook Connect) authentication strategy for connecting to lds.org thru LDS Connect with Ruby / Sinatra / etc

LedgerSync is a simple library that allows you to sync common objects to popular accounting software like QuickBooks Online, NetSuite, NetSuite, etc.

LedgerSync is a simple library that allows you to sync common objects to popular accounting software like QuickBooks Online, QuickBooksOnline, NetSuite, etc.