Responsive Prototyping and Agile Requirements for Teams

Snippet from Wikipedia: IRise

iRise is a software company based in El Segundo, California. It provides a cloud-based requirements definition and visualization platform for teams and businesses. iRise allows product owners, product managers, business analysts and other stakeholders to prototype new products, features, and enhancements without any code or scripting. iRise also supports creating interactive business process flows, use cases, and other diagrams. Each screen, UI element, and diagram can be annotated with detailed requirements that can be exported into custom documentation.