Prototypr!

Using Balsamiq Mockups feels like you are drawing, but its digital, so you can tweak and rearrange controls easily, and the end result is much cleaner. Teams can come up with a design and iterate over it in real-time in the course of a meeting.

Fluid UI is the fastest mobile app prototyping tool available. Design and test your low and high fidelity app mockups on a mobile device with ease. Simple and UX oriented, this UI tool helps unlock creativity and will save your team time and money while gathering app requirements.

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.

Creator is a drag-&-drop prototyping tool for creating great apps using Ionic Framework.

Briefs is the essential app design tool built for a professional design workflow. Lifeless mockups don’t tell the entire story, but you don’t have time to build a prototype. We’ve been there, too. Your clients needed a clearer picture, so give them something to touch.

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. Some key features include: clean and clear interface, unlimited page size

Prototype cheaply and quickly for iPad, iPhone, Android, Windows Phone 7, Facebook and web using Apple Keynote, Microsoft PowerPoint or OpenOffice Impress.

Upload your designs,mockups or wireframes by file or by URL snapshot, organize them and connect them to web prototypes. Share them with friends, colleagues and clients to get point specific Feedback. Giving Design Feedback is also possible without any registration.

Create stunning mockups or wireframes of iPhone and iPad Apps. Export clickable prototypes and share them for free with AppTaster. Master iOS projects!

Create, Preview, Share and Install in any iPhone iPod iPad or web browser your mobile prototypes without a single line of code.