Axure - The most powerful way to plan, prototype and hand off to developers, all without code. Download a free trial and see why professionals choose Axure RP 9.

Respondent - Respondent helps you find any target audience in the world for in-person and remote research studies across all research methods including interviews, focus groups, surveys, and more. Respondent works with any research tool you already use.

Balsamiq - Balsamiq. Rapid, effective and fun wireframing software.

Startquestion - Say goodbye to boring surveys and forms.

Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project

Qualaroo - Qualaroo makes it easy to survey specific groups of website visitors to gain qualitative information.