Stack Auth offers an open-source authentication and user management suite that can be integrated in minutes. It supports organizations, teams, RBAC permissions, and third‑party OAuth flows, plus features like password login, SSO, 2FA, impersonation, and webhooks. The platform provides ready‑made UI components for Next.js as well as headless SDKs and managed JWT handling for developers.
Funding
$500K raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Product
Problem
Implementing secure authentication and user management can be complex and time-consuming for developers, often requiring significant effort to build and maintain custom solutions. Existing third-party authentication services can introduce vendor lock-in and may not offer the desired level of control or customization.
Solution
Stack Auth provides an open-source authentication and user management platform designed to simplify the integration of authentication into Next.js applications. It offers a comprehensive suite of features, including passwordless login, single sign-on (SSO), role-based access control (RBAC), and support for organizations and teams. By providing pre-built components and a headless SDK, Stack Auth enables developers to quickly implement secure authentication flows and manage user identities without relying on proprietary services. The platform manages JWTs and access tokens, offers REST APIs and webhooks for custom integrations, and supports impersonation for debugging and customer support.
Target Audience
Stack Auth primarily targets developers and teams building Next.js applications who need a flexible, open-source authentication and user management solution.
Features
- Pre-built, customizable UI components for authentication flows (password, SSO, 2FA)
- Headless SDK for building custom UIs with full control
- Support for organizations and teams with email invitations and management tools
- Flexible permission trees and role-based access control (RBAC)
- Integration with third-party OAuth providers (e.g., Gmail, OneDrive)
- REST API for user management and authentication tasks
- Webhooks for syncing user data with external services and databases
- User impersonation feature for debugging and support
- JWT management and access token handling
- Support for SAML SSO connections