jdavis/twofactorauth — pull request #304 by cubiclesoft (2014-03-21 04:31:13+00:00)
Title: Added Barebones SSO Server/Client

The Barebones SSO Server/Client is a self-hosted, standalone solution written in PHP that has various forms of two-factor authentication built-in, but the 2FA features are optional. The Generic Login provider has Google Authenticator and e-mail 2FA support.

http://barebonescms.com/documentation/sso/