Auth0 by Okta vs. Keycloak
Auth0 by Okta
auth0.com/Auth0 is Okta's B2C identity management solution. It's an all-in-one package, with social login, bot detection, UI components, anonymous users, single-sign-on, MFA etc. The free tier comes with 7,500 MAUs. That said, it's relatively expensive and 20,000 MAUs will cost you $1400/month.
Keycloak
www.keycloak.org/Keycloak is an open source identity and access management solution. It supports Keycloak single-sign-on and OpenID Connect or SAML 2.0 Identity Providers (Google, Facebook, GitHub etc).
Pros
- Offers passwordless, social, and multifactor auth× 1
- Extensive documentation and community support× 1
- Breach detection and brute-force protection× 1
Cons
- Free tier has restrictions on active users and features× 1
- Higher tiers can be expensive× 1