Trac - Trac is a project management and bug/issue tracking system. Provides an interface to Subversion and an integrated wiki.
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
Fossil - Simple, high-reliability, distributed software configuration management
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
Open Authenticator - A trusted open-source Authenticator. Formerly known as SmartWatch2 Authenticator free.
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.