HTML pages created with UXPin - my personal favorite because it's a prototyping tool created by UX Designers. It quickly allows me to prototype and create wireframes for different kinds of devices and resolutions. It has a huge library of UI Elements, it has real-time, direct collaboration and allows for sharing a functional, interactive prototype by copy of the preview URL & email, tweet or post it.
Prototype of linking to another page or image (displays the full view)
Allows to communicate on interactions (what a button should do, for example).
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HTML Pages created with UXPin

HTML pages created with UXPin - my personal favorite because it's a prototyping tool created by UX Designers. It quickly allows me to prototype and create wireframes for different kinds of devices and resolutions. It has a huge library of UI Elements, it has real-time, direct collaboration and allows for sharing a functional, interactive prototype by copy of the preview URL & email, tweet or post it.

Mary Grace Francisco
Lead Design Architect, PMP, CSM Austin, TX