Top 8 products relevant to Two Factor Authentication and SSO

FusionAuth is a CIAM platform that is 100% free for unlimited users.

Open Source freemium

Authelia is an open-source authentication server providing SSO and two-factor for your applications running behind NGINX.

Open Source

Kinde provides Authentication tools and infrastructure to helps SaaS businesses accelerate their product development. Every day, Kinde gives the best teams in the world, everything they need to build, secure, monetize, and manage a more modern web.

freemium $25.0 / Monthly (Professional plan starting from 10,500 monthly active users)

The only full stack Identity & Access Manager. The IAM solution encompasses: multi-factor authentication, single sign-on,enterprise password manager & vaulting, end point access management, directory services & over 60,000 application integrations.

freemium

Looking for a hassle-free authentication solution? Engity is your GDPR-compliant, European, fully scalable, managed & flexibly customizable Identity & Access Management Provider.

paid €0.01 / Monthly (per User)

Acceptto's continuous behavioral authentication eGuardian® platform protects your identity from cyber-attacks and data breach.

PassHub, a password manager with sharing capabilities and more secure multi-factor authentication. No need to even remember a master password.

paid Free Trial $1.0 (per user)

Expedited Security provides straightforward security services for Heroku, AWS and Google Cloud.