Prototype Composer is not available as a web app but there are plenty of alternatives that runs in the browser with similar functionality. The best Online alternative is Lucidchart, which is free. If that doesn't suit you, our users have ranked more than 25 alternatives to Prototype Composer and many of them are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to Prototype Composer are Balsamiq Wireframes, Wondershare EdrawMax, Wireflow and Moqups.
Lucidchart is a cloud-based platform that promotes teamwork through diagramming, collaboration, and data visualization. It serves millions worldwide, offering flowcharts, UML, real-time collaboration, Visio support, and browser access. Designed for innovation and understanding, it integrates easily into workflows.
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.
Versatile diagram software offering extensive templates for flowcharts, org charts, and more. AI integration simplifies diagramming, facilitates project analysis, and includes features like chatbots and OCR. Suitable for personal, professional, and collaborative use.
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 streamlined web app that helps you create and collaborate in real-time on wireframes, mockups, diagrams and prototypes.
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.
Instead of starting with a blank screen, SmartDraw gives you the exact template you need. Then use simple commands to add your information and SmartDraw does the rest. There's no other drawing software like it.
Studio.Design is the site builder for designers. The browser app is packed with design features as intuitive as Figma, a CMS as simple as Notion, and one-click publishing to your domain. Now, you can finally turn any idea into a stunning website quickly and easily.
Web-based diagram platform offers real-time teamwork, 50+ diagram and mind mapping types, technical wireframing, smart objects, templates, version control, secure cloud storage, PDF export, collaboration tools, commenting, and integration for business and education use.
ProcessMaker is a cost effective and easy to use open source business process management (BPM) or workflow software application.
"If they could see what Im thinking, they'd get it!" People just understand faster with pictures. It helps them see how information is connected, whether it is complete, and how a shift in one element impacts something else.
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Lucidchart is not a wireframing tool