Penpot
Open source Figma alternative for UI design and prototyping — browser-based, no installation
An open source visual website builder for teams that want Webflow-like control without lock-in
Webstudio is one of the more credible open source attempts at a Webflow alternative because it is not just a toy page builder. The pitch is ownership: visual editing, real CSS control, CMS connections, and the ability to host in more than one way. That makes it especially interesting for agencies and product teams that like Webflow-style speed but dislike being locked into a closed platform. It is not the simplest option for a complete beginner, but it has a clear place in the design-to-production workflow.
Best for users who are comfortable following setup instructions or running a self-hosted tool.
Use it when you like visual building but want more control over hosting, source, and long-term ownership
Let designers work visually while still keeping developers close to real web primitives and CSS
Connect a headless CMS and build polished pages without starting from a blank codebase