Justinmind is an all-in-One Prototyping tool for Web, Mobile, and more. Justinmind allows you to prototype faster and better with default built-in widgets. These widgets have been specifically designed to fit your iOS or Android app, so your content always looks great. Import the right widgets for your design. Create a low-fidelity wireframe when focusing on content and structure. With Justinmind you can choose between different widget libraries that include interactive sketch-like components, arrows, menus, images and more.Check out all the libraries they have in store for you and/or share your own with the Justinmind Community.