Moqups is a free HTML5 wireframing application for creating wireframes, mockups or UI concepts, prototypes depending on how you like to call them.

Prototyping is supposed to be fast and painless, moqups is a simple to use app that sits in the browser, loads instantaneously, has a distraction-free user interface and produces crisp wireframes that we can immediately share with our peers.

Major Features

• 60+ handcrafted, crisp-looking SVG stencils
• Export to PDF and PNG
• Smart guides
• Snap to objects/grid when manipulating objects
• Locking & Grouping of objects
• Linking to other pages (itemized linking coming soon)
• Icon library covering the majority of use cases
• Markdown support for various stencils