Insomniate - Insomniate is a highly lightweight application that keeps your PC from going into Sleep/Standby mode.
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
Caffeinated - Caffeinated is a clone of a comparative Mac OSX apparatus called Caffeine and stops your PC going into standby.
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
Caffeine for Windows - Prevent your computer from going to sleep
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.