Evercookie – uses devious ways to try to track users. Hmm, this one is questionable. Please use it for good, not evil.. :/
yepnope.js – a wrapper around LABjs Script Loader to save bandwidth by only loading needed components. Think of JSON – there’s no reason to send this down the wire if the browser supports this natively.
Chrome Speak To Site; Give any input the power to listen to you – support for input type=speech (supported by WebKit)
embedJS – selective JS for embedded devices (mobile, TV, etc.) based on capabilities.
JS Console for iOS – native JS console built by Remy Sharp.
Joyent Node SmartMachine – API for node.js?