Memberstack

Memberstack is a no-code membership and user authentication platform that integrates deeply with Webflow, Bubble, and other builders. It allows adding logins, gated content, and subscription payments to any site. Key features include secure member databases, Stripe integration, and custom user roles.

It targets creators and businesses building membership sites or SaaS products. Pricing starts at $29/month. It ranks well for its best-in-class, developer-grade authentication tools made accessible to no-code builders, enabling complex user-based functionality.