HEATKEYS

MockupScreens, a rapid screen prototyping tool for technical and non-technical users alike. Aimed at software designers, analysts and development teams, MockupScreens lets you to sketch screen mock-ups of your application or web pages and organize th...

SitePoint.com - With a vast variety of web design tutorials and articles coupled with a vibrant and well informed community, SitePoint the natural place to go to grow your online business

Software development tools support UML, SysML, BPMN, Business Rule, ERD and mind mapping. All Visual Paradigm tool can run on Windows, Linux and Mac OSX.

InVision lets you transform your designs into beautiful, interactive web & mobile mockups and protoypes!

GUI Design Studio is a graphical user interface design tool to rapidly create software prototypes with no coding. Draw screens, web pages and components, connect them together to storyboard workflow then run as a prototype to test your designs.

Opensource, Free and Useful Online Resources for Designers and Developers

Smashing Magazine is focused on design and web-development. We deliver useful information, latest trends and techniques, useful ideas, innovative approaches and tools.

Newfangled specializes in creating marketing sites for businesses that see their web site as a central element in their marketing plan.

Balsamiq Studios is a fast-growing, but still-very-personable software company that aims to make the world a better place by helping people create software that is easier to use. We like to compete on usability and customer service.