Rubius provides a simple interface to RADIUS authentication

Simple RSS parser that supports feeds with HTTP Basic Authentication

Authenticate users through Google in your app using devise and omniauth

Token based authentication

SignedApi gem offers easy way to make your web APIs secure by using secret key based signature authentication.

Signature authentication

This gem make authentication very simple

Basic token based authentication for APIs

Simple and safe token authentication library that uses Rails' `authenticate_or_request_with_http_token` method

Simple implementation of authentication for Rails

Makes it possible to protect selected Sinatra routes with HTTP Basic Authentication

A Rails engine for quickly adding SMS authentication to a Rails API

SMS Authentication

Apppend rows to a Google Sheets spreadsheet. Uses Google Sheets API v4 with server-to-server authentication

The dumbest authentication system you could think of

Ruby library for the TeleAuth authentication system. Requires a TeleAuth API key.

A simple authentication via LDAP

Authentication generator for new Thincloud apps.

Provides an authentication solution for ruby applications being used at the Vienna University of Technology

simple twitter authentication wrapper