Lucidchart
Online diagram and flowchart software that supports Microsoft Visio import and can work on any operating system.
"The most stunning HTML5 App for creating high fidelity, resolution independent SVG mockups and wireframes!" The Free Plan includes 2 projects (limited to 300 objects) and 5MB of storage.
"The most stunning HTML5 App for creating high fidelity, resolution independent SVG mockups and wireframes!"
The Free Plan includes 2 projects (limited to 300 objects) and 5MB of storage.
Real time collaboration SVG Support
Productivity Developer Tools Phots and Graphics
drawing real-time-collaboration svg mockups prototyping html5 wireframes wireframe-prototype
Online diagram and flowchart software that supports Microsoft Visio import and can work on any operating system.
Freemium
OmniGraffle can help you make eye-popping graphic documents—quickly—by providing powerful styling tools, keeping lines connected to shapes even when they’re moved, and magically organizing diagrams with just one click.
Commercial Mac OS X iPad
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.
Commercial Mac OS X Windows Web
mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application. It is not Flash based.
Commercial Web
ProcessMaker is a cost effective and easy to use open source business process management (BPM) or workflow software application.
Freemium Android iPhone Android Tablet iPad Web
Use your existing WordPress site to get feedback on your design projects. Upload your design images, wireframes, mockups, logo sketches, photography and more. Gather comments directly on top of your designs.
Commercial Self-Hosted Wordpress