An open source wireframe to app tool powered by Llama 3.2 vision. Upload a screenshot of a simple site/design & get code.


POP (Prototyping on Paper) is described as 'POP helps you make interactive prototype with ease. If you can draw, you can design apps. The workflow is ridiculously simple:' and is a Prototyping tool in the development category. There are more than 10 alternatives to POP (Prototyping on Paper) for a variety of platforms, including Mac, Web-based, iPad, iPhone and Self-Hosted apps. The best POP (Prototyping on Paper) alternative is Napkins.dev, which is both free and Open Source. Other great apps like POP (Prototyping on Paper) are Frame0, Balsamiq Wireframes, Wireflow and Marvel.
An open source wireframe to app tool powered by Llama 3.2 vision. Upload a screenshot of a simple site/design & get code.


Sketch your app ideas without stress Make hand-drawn style wireframes quickly and easily.




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.






Feature-rich, open-source Wireflow offers a collaborative platform for online creation of complex user flow prototypes. Ideal for team work in UI design, wireframing, and mind mapping, promoting idea sharing in real-time environment aided by modern whiteboard features.

A collaborative design tool offering wireframing, prototyping, and design specs creation in a single browser-based platform. Integrate seamlessly with your workflow via API, sync with Sketch and Photoshop, and utilize a vast library of assets. Streamline design-to-dev with automated code generation.





Online tool for creating mockups in the browser. Use your browser’s save function to save the file (just html for view only, complete save for an editable version) or export to codepen for others to view.

Automatically connects to your Photoshop document and converts your mockups into interactive prototypes using layer comps to organize your documents into screens. Transition between them by defining hotspots in the layer name you want to be tappable.






Create stunning mockups or wireframes of iPhone and iPad Apps. Export clickable prototypes and share them for free with AppTaster. Master iOS projects!


Briefs is the essential app design tool built for a professional design workflow. Lifeless mockups don’t tell the entire story, but you don’t have time to build a prototype. We’ve been there, too. Your clients needed a clearer picture, so give them something to touch.






POP is an app-based app prototyping tool, to be viewed on a device. Balsamic is not.