Alertify.js
Very cool library! The one thing all of these type of things lack (e.g. this, dojo.dialog()) is that they are non-blocking to the execution thread, unlike alert()/confirm()/prompt(). I know it's not their fault, javascript doesn't allow this natively, but i feel like that would be immensely useful for general user input, form validation and the like. Yes, I am aware that it can be done currently through workarounds, I'm just saying that allowing certain native objects to be blocking upon further user input, would be immensely useful and save code readabilityEDIT: Care to explain why I'm getting downvoted? Said nothing offensive, and I'm clearly on-topic.