SuperTokens vs FusionAuth

The honest comparison

Both are practical self-hosted CIAM choices. SuperTokens leans more developer-tool with optional managed cloud. FusionAuth leans more product-platform with flat per-instance licensing.

When SuperTokens wins

• Open-source core matters to your stakeholders
• You want a managed cloud fallback for when self-hosted gets too heavy
• Smaller deployments where SuperTokens' lighter footprint is an advantage

When FusionAuth wins

• Multi-tenant SaaS where tenant isolation must be first-class
• Larger user populations where flat licensing dominates per-MAU economics
• You want a more mature product with broader feature set
• Enterprise compliance certifications matter

Pricing reality

Both are free to self-host. SuperTokens' managed cloud has per-MAU pricing. FusionAuth's commercial editions are per-instance / per-deployment, often more predictable at scale.

Verdict

For small to mid deployments, SuperTokens. For larger, multi-tenant, or compliance-bound deployments, FusionAuth. For Keycloak refugees, FusionAuth typically maps more directly.