UXPin is a collaborative design platform, allowing entire teams to participate in the design process from start to finish.

MockFlow is a collection of wireframe tools, prototyping tools, UI mockups, UX suite.

Pidoco is a cloud-based collaboration software.

Fluid UI is a browser-based wireframing and prototyping tool developed by Fluid Software and used to design mobile touch interfaces.

Mockup Designer is an online mockup creator.