jQuery Mobile vmouse - from the jQuery Mobile team. Supports normalized handling of mouse and touch events under one event convention: vclick, vmousedown, vmouseup, vmousemove, etc.
interact - abstracted mouse and touch events into generic pointer events. Uses eve under the hood.
tappable - A simple, standalone library to invoke the tap event for touch-friendly web browsers.
dojo/touch - Dojo detection functions for touch events
jQuery UI Interactions - Rewrite of the existing jQuery UI interactions, now with mouse, touche and pointer (aka MSPointer) support. Work in progress, but draggable already works great for all three event APIs.
Ember-Touch - A lightweight library for building and using touch gestures with Ember Applications.