FusionAuth
8.3#1 in authentication softwareFrom $162 a monthFree planAndroidiOSWebAPI
VisitFusionAuth vs Seamless Auth
Seamless Auth
6.9#16 in passwordless authentication softwareFrom $49 a monthAndroidiOSWebAPI
VisitWhat both publish
| Fact | FusionAuth | Seamless Auth |
|---|---|---|
| Authentication methods | Supported methods include passwords, social and enterprise identity providers, passkeys and one-time passwords. | The product supports passkeys, magic links, email and phone OTP, and TOTP MFA. |
| Integrations | Identity-provider integrations include Apple, Facebook, Google, Twitter and arbitrary OIDC or SAML v2 providers, with connectors, plugins and monitoring integrations also available. | The maker documents React, Express, Fastify, and Next.js integrations, with a framework-agnostic core for other runtimes. |
FusionAuth plans
- CommunityFree
- Starter$162 a month
- Enterprise$2,970 a month
- Essentials$2,970 a month
Seamless Auth plans
- Free trialFree
- MVP$49 a month
- Business$149 a month
- EnterprisePriced on request
Pick FusionAuth if…
FusionAuth suits teams managing end-user identity that want deployment choices from self-hosting to managed cloud. It is not positioned as a desktop integration or Active Directory replacement.
Pick Seamless Auth if…
You want what its maker publishes above — check its page for the details.