Iteration X - Iteration X allows teams to annotate and edit any live website or web app directly in Chrome.
Invision - Prototyping and collaboration for design teams
Wized - Design your web application in Webflow, build it with Wized
Marvel - Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.
Duckly - Collaborate on any page with a Figma-like experience
Axure RP - The prototyping and specification software used by 87% of the Fortune 100. Beyond mockups, design interactive prototypes for business solutions, websites, and applications.