The best Prototyping alternative to Penpot is Figma, which is free. If that doesn't suit you, our users have ranked more than 50 alternatives to Penpot and many of them are Prototyping Tools so hopefully you can find a suitable replacement. Other interesting Prototyping Tool alternatives to Penpot are Pencil Project, Sketch, Penpot Desktop and Lunacy.
Figma is a web-based platform offering a robust set of tools for vector graphics editing and prototyping, along with offline desktop apps for seamless workflows. Designed specifically for UI and UX design, it emphasizes real-time collaboration, visual versioning, and vector networks to streamline the designer's work.
Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.
Vector-based Mac design app focused on UI, UX, web, and mobile with responsive artboards, prototyping, plugin support, real-time collaboration, reusable libraries, non-destructive editing, cloud feedback, and device preview via companion mobile app.
Penpot Desktop is an unofficial desktop application for the open-source design tool, Penpot.
Cross-platform vector editor for UI, UX, and web projects with native .sketch file editing, real-time multi-user collaboration, an AI-backed asset library, code and asset export, Figma integration, offline use, seamless cloud management, and auto layout tools.
For the love of design—designers are facing new challenges, and need fast and reliable tools to stay ahead. that’s why we’re making Paper: a powerful canvas that helps you make beautiful art and experiences.
Low-fidelity UI wireframing tool simulating sketching experience, optimized for speed with Quick Add, built for collaboration, drag-n-drop simplicity, exportable wireframes to PNG/PDF, interactive prototypes via linking, hundreds of UI components, reusable symbols, and more.
We believe the screen is the most important place in the world. That’s why we are dedicated to helping you deliver the best possible digital product experience, with our platform and best practices from your peers.
OmniGraffle can help you make eye-popping graphic documents—quickly—by providing powerful styling tools, keeping lines connected to shapes even when they’re moved, and magically organizing diagrams with just one click.
A streamlined web app that helps you create and collaborate in real-time on wireframes, mockups, diagrams and prototypes.
Axure RP is the leading tool for rapidly creating wireframes, prototypes and specifications for applications and web sites.
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Penpot seems to be created to be easy to use for people switching from figma.