interact.js - Drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers

interact.js is a standalone javascript module for handling single-pointer and multi-touch drags and gestures with powerful options such as inertia and snapping to grids or custom coordintes.

interact.js - Features:

• inertia
• snapping to a grid, custom anchors or paths.
• cross browser and device, supporting {Chrome,Firefox,Opera}' '{mobile,desktop}', ' and Internet Explorer 8+
• interaction with SVG elements
• being standalone (not yet another jQuery plugin)
• introducing 0 additional DOM elements
• having(a). fluent ().interface
• not modifying anything it doesn't own (except to support IE8 and to change the cursor (but you can disable that))