OpenSMTPD vs OTP Auth
A side-by-side look at OpenSMTPD and OTP Auth. For an in-depth review of either product, follow the links below.
OpenSMTPD
Network & Admin
OpenSMTPD is an open source SMTP server daemon for Linux and BSD operating systems. It aims to be a free, secure, and featureful SMTP server for both hosting providers and end users.
smtpmail-serveremaillinuxbsdopen-source
OTP Auth
Security & Privacy
OTP Auth is a free and open source two-factor authentication app for Android and iOS. It generates timed one-time passwords for use in two-factor systems. It supports both HOTP and TOTP standards and can scan QR codes to easily set up accounts.
twofactor-authenticationopen-sourceqr-codehotptotp
Related Comparisons
FreeOTP
2FA Authenticator (2FAS)
Tofu Authenticator
Invantive Authenticator
UNLOQ
Authomator