Concept.ly is described as 'Free web and mobile mockup tool' and is an website in the Business & Commerce category. There are more than 50 alternatives to Concept.ly, not only websites but also apps for a variety of platforms, including Windows, Mac, iPhone and Linux. The best alternative is Lucidchart, which is free. Other great sites and apps similar to Concept.ly are InVision (Freemium), Balsamiq Wireframes (Paid), Axure RP (Paid) and Marvel (Freemium).
Lucidchart is a visual workspace that combines diagramming, collaboration, and data visualization to accelerate understanding and drive innovation. With this intuitive, cloud-based solution, everyone can work visually and collaborate in real time.
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.
Origami Studio is a free design tool built by Facebook designers for creating interactive UI prototypes. An elegant, layer-based interface allows designers to repaidly create prototypes with layers, build interactions and then share them with others.
Comp CC makes it easy for designers to lay out ideas with real assets like photos, text and shapes. They can then send the wireframe to Photoshop CC, Illustrator CC, InDesign CC or Muse CC to refine and finish.
Principle makes it easy to create animated and interactive user interface designs. Whether you're designing the flow of a multi-screen app, or new interactions and animations, Principle lets you create designs that look and feel amazing.