Alternatives
10 best Auth0 alternatives
Tools that cover the same task as Auth0 (security), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- Auth0 starts at
- Not listed
- Free plan
- Free plan
- API
- API available
- 01
Aserto
Aserto provides cloud-native authorization as a service with fine-grained RBAC, ABAC, or ACL enforced in about a millisecond. Developers use SDKs, policy repositories, and authorizer instances to centralize permissions for applications and APIs.
Best for: Teams adding centralized, low-latency authorization to SaaS apps, especially alongside Auth0 or similar identity providers.
- 02
Ory
Ory provides identity, authentication, authorization, and OAuth2/OIDC services through Ory Network and related open-source projects such as Kratos, Hydra, and Keto. The commercial site targets CIAM, B2B IAM, fine-grained permissions, passkeys, and enterprise SSO for applications that need scalable, API-first identity infrastructure.
Best for: Product and platform teams replacing Auth0-style stacks or self-hosting Ory components who need hosted Ory Network production environments.
- 03
WorkOS
WorkOS helps SaaS companies add enterprise-ready authentication features such as SSO, Directory Sync, MFA, Audit Logs, and AuthKit user management with minimal integration code. The platform targets staging and production environments with modular APIs for B2B customer IT requirements.
Best for: B2B software vendors selling to enterprise customers who need SSO, SCIM, compliance logging, and self-serve IT onboarding.
- 04
Castle
Castle provides SDKs and APIs to detect bots, monitor risky logins, and stop account abuse using device, email, IP, and behavioral intelligence. Teams integrate Castle to score traffic and automate policy actions in web and mobile apps.
Best for: Product and fraud teams at consumer apps that need bot detection, account takeover protection, and IP intelligence without heavy integration friction.
- 05
PropelAuth
PropelAuth provides authentication and org management built for B2B and AI-native products. The platform covers hosted login UIs, SAML and enterprise SSO, RBAC, API keys, and MCP authentication so teams can ship secure multi-tenant apps faster.
Best for: B2B SaaS and AI-native companies that need multi-tenant auth, enterprise SSO, and org management without building it in-house.
- 06
Pritunl
Pritunl is an open-source enterprise VPN platform for OpenVPN, WireGuard, and IPsec with a web management UI, multi-host clustering over MongoDB, and optional premium features such as SSO and site-to-site links. It targets self-hosted remote access and VPC peering across clouds.
Best for: Infrastructure teams needing self-hosted VPN with horizontal scaling and enterprise authentication options.
- 07
Cloudanix
Cloudanix is a CNAPP+ platform spanning code, cloud, access, and agentic security on one graph. It offers CSPM, CIEM, workload protection, just-in-time access, coding-agent guardrails, and LLM-native investigation across AWS, Azure, GCP, and Kubernetes with self-serve Pro SKUs and enterprise options.
Best for: Security and platform engineering teams needing unified cloud posture, runtime protection, JIT access, and guardrails for AI coding agents.
- 08
FACEIO
FACEIO is a passwordless facial authentication SDK for websites and apps, combining face recognition, liveness detection, and age verification through a browser widget and REST API. Developers enroll users once and authenticate them with face scans instead of passwords.
Best for: Web developers who need cross-browser face login, liveness checks, or age gates without building biometrics in-house.
- 09
Bubble
Bubble is a visual no-code platform for building web and mobile applications with databases, workflows, design tools, and AI-assisted development in a hosted workspace.
Best for: Founders and product teams shipping full-stack apps without traditional code who need Bubble-hosted infrastructure.
- 10
Anam.ai
Anam provides a real-time interactive AI avatars API for building video agents with lip-synced personas, custom voices, and multilingual support. Developers embed avatars in apps with session limits, concurrent streams, and per-minute overage billing on paid tiers.
Best for: Developers and product teams adding real-time avatar tutors, sales agents, or support bots with a hosted avatar API.
Auth0 alternatives: common questions
What is the best free alternative to Auth0?
Aserto has an ongoing free plan. Starter tier is FREE forever with limits on policy repositories, authorizer instances, and users. Free plans change, so check the vendor before relying on one.
What is the cheapest Auth0 alternative?
Aserto has the lowest listed starting price at $0.20/mo.
Which Auth0 alternatives have an API?
Aserto, Ory, WorkOS, Castle, PropelAuth mention API or developer access.