WireframeSketcher

WireframeSketcher is a software tool that helps quickly create wireframes, mockups and prototypes for desktop, web and mobile applications. It comes both as a plug-in...

Commercial Mac OS X Windows Linux Eclipse

Mockup Builder

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...

Freemium Web

Flairbuilder

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

Commercial Mac OS X Windows Linux

ProtoShare

ProtoShare is a web-based, collaborative wireframing and prototyping tool. It hosts a WYSIWYG drag-and-drop interface, as well as advanced components users can...

Commercial Web

Iplotz

Wireframe your Ideas iPlotz allows you to rapidly create clickable, navigable mockups and wireframes for prototyping websites and software applications. Create a...

Freemium Web

MockupScreens

Create five screens in ten minutes without any programming knowledge or prior training! MockupScreens, a rapid screen prototyping tool for technical and non-technical...

Commercial Windows

Prototype Composer

Serena Prototype Composer - the best agile application prototyping tool is now free! View the demo, take the product tour, or download it free today.

Freemium Windows

Napkee

Napkee makes your Balsamiq Mockups come alive. Import a BMML and export to web or flex code in a few clicks.

Free Open Source Mac OS X Windows Linux

Composite

Automatically connects to your Photoshop document and converts your mockups into interactive prototypes using layer comps to organize your documents into screens....

Commercial

Moqhub

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...

Freemium Web

Quant-UX

Quant-UX is an integrated Prototyping and Analytics software. It allows you to design, test and analyze interaction prototypes.

Freemium Mac OS X Windows Linux

MockupCreator

MockupCreator is a tool to create mockups, prototypes and wireframes. MockupCreator will help you to accelerate your products development and improve the quality of...

Commercial Windows

Tiggr

Tiggr is an application for creating user interface prototypes collaboratively online.

Free Web

Keynotopia

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

Commercial Web

MockupUI

UI mockup and wireframing software helping designers and developers materialize ideas into wireframes or high fidelity UI prototypes.

Freemium Windows