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.
Mockito - Mocking framework for unit tests in Java.
Balsamiq - Balsamiq. Rapid, effective and fun wireframing software.
400Force.net - The company offers advanced website QA testing, our model doesn't require meetings/special adjustments to start, we can start testing when we have the main URL address. Our principles are simplicity and quality and our software proves both.
Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project
Testbirds - Testbirds is a crowdtesting platform with a community of 100,000 testers