Auth0 Alternatives: 8 Best Options for Cost-Effective Authentication in 2026
Many developers are moving away from Auth0 due to skyrocketing costs, poor support, and limited customization after its acquisition by Okta. This has created demand for alternatives that offer transparent pricing, better developer experience, and flexible deployment. Top contenders include FusionAuth (developer-first with free tiers), Hideez (passwordless, phishing-resistant MFA for SMBs), Keycloak (open-source and self-hosted), and Firebase (scalable with Google integration). Frontegg caters specifically to B2B SaaS with built-in multi-tenancy, while tools like Stytch and WorkOS target specific use cases like Web3 login or enterprise SSO. Pricing varies widely — from open-source to premium — so choosing the right solution depends on your technical needs, growth plans, and budget.