Bubble

Bubble is a visual web application builder that bundles a database and backend logic into one platform. It's used to build millions of applications for marketplaces, SaaS products, internal tools, and two-sided platforms without writing code. You drag and drop to build the interface, then create workflows and database queries for the underlying logic.

Bubble is built for applications, while Webflow focuses on websites. Bubble includes user authentication, payments, and complex data relationships that Webflow doesn't handle. If you need a real application builder rather than a website designer, Bubble is closer to platforms like OutSystems but much faster to learn and deploy with.