Based on our record, privacyIDEA seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
You might want to take a look at our open source solution privacyIDEA or go with anything else. Take care, to not enter a vendor lock in. Source: over 2 years ago
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
YubiKey - The YubiKey is a one-time password device for secure login with two-factor authentication
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
Nitrokey - Email Encryption. Encrypt your emails with GnuPG, OpenPGP, S/MIME or your favourite email client.
Rublon - Rublon enables your workforce to securely access your organization's networks, servers and applications via easy-to-use multi-factor authentication. Protect cloud apps, VPNs, servers, workstations, internal as well as on-premise apps.
SoloKeys - Secure login made open and easy 🔒