Google Sign-In - Google Sign-In is a secure authentication system that enables users to sign in with their Google accounts.
Keygen - A dead-simple software licensing API built for developers
LinkedIn Login - LinkedIn Login is an authentication solution that lets users sign in with their professional identity.
@ctivate - Activation Solutions is a software license management system solution to protect your software product from illegal copying or distribution.
Facebook Login - Facebook Login is a secure, fast and convenient way for people to log into your app or website.
Labs64 NetLicensing - Monetize your digital products and services