Tesseral

Complete B2B authentication platform that handles everything from user login to enterprise-grade security features. Build sophisticated user management systems without the complexity of developing auth infrastructure from scratch.

Key features include:

• Pre-built login UI that matches your brand styling and supports multiple authentication methods
• Enterprise SSO integration with SAML and SCIM provisioning for major identity providers like Microsoft Entra and Okta
• Fine-grained authorization with custom roles and permissions management for your customers
• Managed API keys with custom scopes and revocation capabilities
• Advanced security features including passkeys, TOTP authenticator apps, and phishing-resistant MFA

Developer-friendly implementation with SDKs for all major frameworks including Next.js, React, Flask, Express.js, and Go. The platform includes user impersonation for customer support, real-time webhooks, and role-based access control that can be implemented with just one line of code.

Perfect for B2B SaaS companies looking to add enterprise-ready authentication and user management without building complex auth infrastructure in-house.