2fa

Messaging platform to send and receive SMS messages globally.

Automate and manage your SSH Keys and SSH Two Factor Authentication across your infrastructure.

Signata is a cryptocurrency wallet service that uses your YubiKey to protect your keys

Passwordless authentication made easy and secure.

Voice biometric 3-factor authentication (3FA) that addresses 2FA vulnerabilities such as SIM swaps

2FA. Easy, cheap (some solutions are free), loads of options. Developer & consumer friendly!