I'd love to have browser push notifications added to my Wordpress site like those offered by https://www.producthunt.com/
At the moment, I can only find plugins/services like OneSignal.com. You can see this in action @ http://steve.doig.com.au/ - the red bell icon at bottom right.
Is there a Wordpress solution that asks the visitor if they want to subscribe to notifications using the browser's (e.g. Chrome, Firefox, Safari) notification protocol (like at producthunt.com), rather than going through a 3rd party icon that visitors may be unfamiliar with?