PushUp is a new product from 10up that offers push notification integration between WordPress and Mac OS X Mavericks.
Currently, only Safari is supported and users must opt-in by viewing a website in Safari, where they are greeted by a popup that prompts them to enable push notifications from a specific website:

If a site visitor allows the push notifications, then the website publisher can optionally choose to enable notifications on a per-post basis, via a checkbox in the Publish box.
They’ve published a video to more fully portray how PushUp works:
Only Safari support for now
10up has been beta testing the product on large production sites such as 9to5Mac and Edelman since January. They plan to add support for Chrome and Firefox as soon as the browsers catch up to Safari’s implementation of push notifications.
Once a user opts-in via Safari, notifications work whether the browser is open or not. I don’t personally remember the last time I opened Safari, and I’m sure I’m not the only one, so while offline notifications is awesome, I’ll be even more interested in this product once they are able to support Chrome and Firefox.
There are a number of things that concern me in regard to WordPress comments. They are one of those features that I have a love hate relationship with.


