The developer of OceanWP just announced a partnership with Push Monkey, one of the first services to provide desktop and mobile push notifications for websites. It supports Chrome, Firefox, Safari and Chrome.
Ocean Extra & Push Monkey
Ocean Extra is a free extension for the free popular OceanWP WordPress theme. It adds extra features including meta boxes, import/export and a theme panel. Since the last version of Ocean Extra, you can now easily activate Web Push Notifications on your website via
Theme Panel > Push Notifications.
Thus, you are able to send news or offers directly to subscriber mobile phones or desktops even when they are not browsing your website. How cool is that? Also you can send notifications to abandoned cart users from your WooCommerce shop.
Core Extensions Bundle
The free OceanWP theme can easily be extended via both free and premium extensions. For the latter you might be interested in the Core Extensions Bundle which includes a nice collection of 10+ add-ons.