Much many tools that can be used in building website pages' prototypes

Once you get into the weeds there's a ton of functionality you can fake. Worked great for user testing complex user flows where the client required data entry and no developers were available. Great transitions and animations before other solutions were available. I liked the collaboration workflow once we invested in team licenses.

Justinmind provides a very intensive libraries for all the interactions I need. It's perfect for hi-fi prototype where the product design is almost final. I love how I can synch my prototypes on different platforms seamless and make my presentation to the team so much easier.