Amazon Cognito
Customer identity and access management service for adding user sign-up, sign-in, and authentication to apps
Open-Source Projects
Discover top open-source software, updated regularly with real-world adoption signals.
Discover top open-source software, updated regularly with real-world adoption signals.
Scalable API‑first auth platform for B2B SaaS
Tesseral's cloud‑native, multi‑tenant authentication service offers customizable login pages, SSO, MFA, API keys and RBAC, with SDKs for popular frameworks and a managed console.
Tesseral is a cloud‑native, API‑first authentication service built for B2B SaaS applications. It delivers a complete set of identity features—hosted, brandable login pages, social and enterprise SSO (Google, GitHub, Microsoft, SAML, OIDC), magic links, MFA, passkeys, API key management, RBAC, audit logs, webhooks, user invitations, SCIM directory sync, and real‑time webhook delivery—without writing authentication code. The platform is multi‑tenant, giving each customer its own admin console to manage users, login methods, permissions, and compliance settings.
Developers can start instantly with Tesseral’s managed service at console.tesseral.com, obtaining a publishable key and integrating via the provided SDKs for React, Next.js, Express, Flask, FastAPI, Django, Go and Rust. For teams that require full control, the solution can be self‑hosted following the documentation, running on any cloud provider. Because the service is API‑first, any backend language can verify tokens via simple HTTP calls, fitting microservices architectures. The SDKs handle token refresh, request signing, and login gating, while the backend SDK validates tokens and supplies claim helpers. This lets product teams focus on core functionality while Tesseral handles secure, compliant authentication at scale.
When teams consider Tesseral, these hosted platforms usually appear on the same shortlist.
Looking for a hosted option? These are the services engineering teams benchmark against before choosing open source.
Enterprise customer onboarding
Admins invite users, configure SSO and enforce MFA from a self‑service console.
Social login integration
Enable Google, GitHub, or Microsoft login with a single configuration step, no code changes.
API‑driven service authentication
Issue scoped API keys with permissions and audit logging for programmatic access.
Support debugging via impersonation
Support engineers log in as a user to reproduce issues instantly.
You can use Tesseral’s managed service at console.tesseral.com, or self‑host following the documentation.
SDKs are provided for JavaScript/React, Next.js, Express, Python (Flask, FastAPI, Django), Go, and Rust (Axum).
Yes, the hosted login pages are fully brandable via the Tesseral Console.
Each tenant has its own admin UI where customer admins manage users, login methods, and permissions.
MFA can be enabled per tenant; users can opt‑in or admins can require it.
Project at a glance
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