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, yEd Graph Editor, Dia and Pencil Project.
EaSynth ForeUI is an easy-to-use UI prototyping tool. You can use ForeUI to create skinnable prototype of software or website, and run the interactive simulation in your web browser. You can switch the UI theme of the prototype, thus the fidelity will be changed as well.
Create five screens in ten minutes without any programming knowledge or prior training!
SwordSoft Layout is an desktop application that makes it very easy for you to create, preview, and manage mockups of your website, mobile application or desktop application. With so many UI elements to choose from, you can design anything.
MockupCreator is a tool to create mockups, prototypes and wireframes.
MockupCreator will help you to accelerate your products development and improve the quality of the product design.
Create wireframe website, landing page, prototyping user interface, creating and sharing mockups, flowchart & mind map online!
Markly is a measure and design spec plugin/extension for Photoshop & Sketch. It is made for modern web designers & app front-end developers. You can add specification marks by simple clicking and dragging.
Upload your designs,mockups or wireframes and organize them in projects. Share them with friends, colleagues and clients to get point specific Feedback. Giving Design Feedback is easy possible without any registration by your customers.
Famous is a design tool that allows you to create and publish live progressive web apps. It's the only tool in the market that lets designers generate a live experience without needing to know any code and without needing any engineers.
Mockups for Android is a vector-based sketch wireframing tool for web site prototyping and creating UI design concepts. With Mockups for Android, you can experiment with concepts and sketch visual prototypes in minutes on your Android tablet or phone!
Prototype cheaply and quickly for iPad, iPhone, Android, Windows Phone 7, Facebook and web using Apple Keynote, Microsoft PowerPoint or OpenOffice Impress.
Rapid app prototyping with a user-generated library of components. No design skills needed.
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