Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
KeePass - KeePass is an open source password manager. Passwords can be stored in highly-encrypted databases, which can be unlocked with one master password or key file.
andOTP - andOTP is a two-factor authentication App for Android 4.4+
bitwarden - Bitwarden is a free and open source password management solution for individuals, teams, and business organizations.
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
LessPass - Next-gen open source password manager