Simple vector graphics editor for creating flowcharts, UML class diagrams, illustrations and slide shows.

Mockingbird is described as 'Online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application' and is a Wireframing tool in the development category. There are more than 50 alternatives to Mockingbird, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and iPhone apps. The best Mockingbird alternative is Penpot, which is both free and Open Source. Other great sites and apps similar to Mockingbird are LibreOffice - Draw, Pencil Project, yEd Graph Editor and Dia.
Simple vector graphics editor for creating flowcharts, UML class diagrams, illustrations and slide shows.



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UXPin is a web-based system for managing design documents like wireframes, sitemaps, persona descriptions or flowcharts. It lets you upload image files, invite teammates to review and comment on them, and keep track of revisions.



Core2D is a multi-platform application for making data driven 2D diagrams. The application has built-in wyswig vector graphics editor where you can bind data to shapes, share data across multiple documents, edit documents using layers.

Work your way up from a blank canvas, or pull in designs from Photoshop or Sketch. Lay out your states and instantly animate between them, without coding a thing. Share your prototypes with anyone or view on any device via a humble...

The newest design tool from the leaders in UX, Indigo Studio lets you quickly and simply explore and create functional, animated UI prototypes while maintaining the focus on user experience at every step.





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.



FlairBuilder is a user interface prototyping tool for easy authoring of interactive website wireframes, mockups and GUI prototypes.

HotGloo is a UX, wireframe and prototyping tool designed to build wireframes for web, mobile and wearables. Create and share fully interactive prototypes with your team and clients and gather feedback on the process.



Design your software or website mockups within minutes. Mockup Builder is a new look to solve old problem with prototyping and sharing sketches with customers. This startup was built to solve developer’s needs in product that can help to make it better communication tool between...



