Seamless Auth vs SuperTokens
Seamless Auth
seamlessauth.comSuperTokens
supertokens.comSide by side
| Figure | Seamless Auth | SuperTokens |
|---|---|---|
| Price from | $49/mo | $0.01/mo |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 4 | 6 |
| Spec score · Passwordless Authentication Software | 7.9 (#15) | 8.7 (#6) |
| Authentication methods | The product supports passkeys, magic links, email and phone OTP, and TOTP MFA. | The platform supports email/password, passwordless magic links or OTPs, social login, passkeys, MFA, unified login, machine-to-machine authentication, and enterprise multitenancy. |
| Integrations | The maker documents React, Express, Fastify, and Next.js integrations, with a framework-agnostic core for other runtimes. | The homepage lists support for JavaScript, Go, Python, React, Angular, Vue, Android, Flutter, and iOS, and says it works with more than 25 frameworks. |
| Product | Seamless Auth is open-source passwordless authentication infrastructure that can be self-hosted or used as a managed service. | SuperTokens is an open-source authentication provider for adding customizable authentication and session management to applications. |
Plans
Seamless Auth
- Free trialFree
- MVP$49 a month
- Business$149 a month
- EnterprisePriced on request
SuperTokens
- Self-hostedFree
- Self-hosted open sourceFree
- Account Linking add-on$0.01 a month
- Multi-factor authentication add-on$0.01 a month
- Cloud$0.02 a month
- Dashboard users$20 a month
In their own words
Seamless Auth
Seamless Auth has no write-up on Specifiction yet; its figures are above.
SuperTokens
SuperTokens is an open-source authentication provider for developers adding sign-in and session management to applications. It supports email and password, passwordless email or SMS codes, magic links, social login, and passkeys. Enterprise options include tenant-specific login methods, separate user pools, and enterprise SSO. Developers can adapt the prebuilt interface and add logic before or after API operations with hooks and overrides. Backend SDKs communicate with SuperTokens Core; frontend SDKs call authentication routes exposed by the application backend. Core can be self-hosted, with open-source features free at any scale and no MAU limit. A managed Cloud plan is also available, free under 5K MAUs and then $0.02 per MAU. Other paid or sales-led features include multi-tenancy, cross-domain unified login, machine-to-machine authentication, availability zones with uptime SLAs, and Attack Protection Suite. That suite can detect risky authentication activity and prompt extra verification or block attempts. Integrations include Next.js, NestJS, GraphQL, Capacitor, AWS Lambda, Vercel, Hasura, and Supabase. SuperTokens says it is SOC 2 compliant and describes more than 100 controls and tests.