Question: Can you recommend a solution that provides a no-code authentication portal with support for multiple OAuth providers?

For a no-code authentication portal that supports multiple OAuth providers, Kobble is a good all-in-one option. Kobble comes with a set of tools for user management, access control and quotas, and built-in support for a variety of OAuth providers. It includes a no-code authentication portal and supports popular frameworks like Next.js so developers can get up and running quickly.

Another strong contender is Clerk, a full-stack user management service that handles authentication and user management. Clerk supports multiple authentication methods, including social sign-on and multifactor authentication, and supports several popular frameworks. It offers a free plan with a lot of features, so it's a good option for smaller apps.

PropelAuth is also a good option for companies that need a multi-tenant authentication service. It supports passwordless authentication methods like magic links and SSO, and has features like customizable roles and permissions, and advanced security controls. PropelAuth has a transparent pricing model, so it's good for businesses of any size.

For a more data-centric approach, ROQ combines secure database queries, user authentication with social logins and multi-tenancy for building scalable SaaS applications. ROQ's AI-assisted data modeling and automated schema deployment can help speed up development and deployment dramatically.