Gotta love open source. To paraphrase, if the project you are looking for doesn't exist, just wait (or start it yourself). I've been wanting to do a proof-of-concept on adding two-factor authentication to Google Apps for you Domain for a long time. And while we will probably put this functionality into the WiKID server down the road, I wanted something right now :).
Gluu's open source authentication & API access management software for securing Web & mobile applications using open standards like SAML & OpenID Connect. Its features include Single Sign-On, Access Management, OAuth, Multi-Factor Authentication, LDAP … Setup Two-Factor Authentication - Open Source For You The solution I’m proposing is open source, and the hardware token will be replaced by your cellphone. In my current assignment, I had to come up with a solution that would support OTP for applications like RADIUS, SSH, Apache, and some other Web services as well. OpenOTP is an enterprise-grade two-factor authentication solution based on Two-factor authentication – opensource.google
2 Factor Authentication (2FA) at Kolab Now. 2FA at Kolab Now involves the password prompt and a Time-based One-Time Password (TOTP) algorithm. The preferred provider of the TOTP is FreeOTP; an free and open source app for smart-phones (https://freeotp.github.io/). It is available for iOS, Android and BlackBerry OS from your favorite app market.
privacyID3A – secure identities – OTP – strong authentication
I tested out the theory of creating a phone factor like 2 Factor authentication solution using only open source. It required using FreeRadius and Asterisk. The configuration I used in the experiment are at the following link.
Two-Factor Authentication FreeOTP is a two-factor authentication application for systems utilizing one-time password protocols. Tokens can be added easily by scanning a QR code. If you need to generate a QR code, try our QR code generator. FreeOTP implements open standards: HOTP and TOTP. This means that no proprietary server-side component is