Tesseral
Open source authentication platform for B2B apps with pre-built UI, enterprise SSO, fine-grained permissions, and API key management. Deploy in minutes.
Complete authentication solution designed specifically for B2B applications. Build secure, scalable auth systems without the complexity of managing authentication infrastructure yourself.
Key features include:
- Pre-built login UI that matches your brand styling and supports multiple authentication methods
- Enterprise connections with SAML single sign-on and SCIM provisioning for seamless integration with identity providers like Microsoft Entra and Okta
- Fine-grained authorization system with custom roles and permissions management
- Managed API keys with custom scopes for secure programmatic access
- Multi-factor authentication supporting passkeys, TOTP authenticator apps, and physical security keys
Developer-friendly implementation with SDKs for all major frameworks including Next.js, React, Flask, Express.js, and Go. Get started with just a few lines of code and ship your authentication system in minutes rather than months.
Enterprise-ready security features like user impersonation for customer support, real-time webhooks for system synchronization, and role-based access control for granular permission management. Scales from startup to enterprise without compromising on security or developer experience.
The Vault login UI can be customized with layout changes, dark mode, logos and primary colors, and provides a ready‑made hosted login page
Organizations are first‑class tenants. Users always belong to exactly one Organization. Users cannot exist outside of an Organization
