No specific info about version 3.1. Please visit the main page of Yubico Authenticator on Software Informer.
Converts any USB drive into a security token for your computer.
The M86 Authenticator ensures the end user is identified on his/her workstation
WinAuth is a portable, open-source Authenticator for Windows.
YubiKey NEO Manager is a tool for managing your YubiKey NEO configuration.
Application for configuring a PIV-enabled YubiKey.
Thor Auth is used to obtain more control and more security over your network