HotGloo is a web based service that let’s you build functional online wireframes for a website or web project. The beauty of their service is that you can create and share fully interactive online prototypes. Collaborate with colleagues and share the output with clients. HotGloo seem perfect for folks working on web projects. Matias of Behance just gave it a stellar review on twitter.
(Dear HotGloo, why don’t you let me embedd your video?)