pusheco

This plugin is a free web push notification service for WordPress websites. 
It allows you to easily add web push notifications to any website. 
Pushe.co console is only available for Farsi language (English version will come soon).
Web push notifications are notifications that can be sent to a user via desktop web and mobile web. 
Web push notifications are delivered on a user’s desktop or mobile screen anytime they have their browser open.
To use this plugin, you should have an account in <a href="https://pushe.co" rel="nofollow ugc">pushe.co</a>‘s console in <a href="https://console.pushe.co" rel="nofollow ugc">console.pushe.co</a>
For more information you can check the <a href="https://docs.pushe.co/docs/wordpress/intro" rel="nofollow ugc">documentation</a>

Pushe Web Push Notification

Pushe.co's official web push notification plugin. Pushe.co console is only available for Farsi language (English version will come soon).

Mozilla Web Apps

Marco Castelluccio

This plugin uses the <a href="https://www.w3.org/TR/push-api/" rel="nofollow ugc">W3C Push API</a> to allow you to send push notifications to anyone who visits your site and signs up for notifications.
Once you’ve installed and configured this plugin, anyone visiting your site/app in <a href="http://caniuse.com/#feat=push-api" rel="nofollow ugc">browsers that support the W3C Push API</a> (Firefox and Chrome, at the time of writing) will be asked whether they want to receive notifications from your site. You will immediately be able to send push notifications to anyone who consents.
Configure the plugin in the Settings > Web Push section of your WordPress installation. Here you can set various pieces of configuration, including:
<ul>
<li>The title for push notifications that appear from your site</li>
<li>When to attempt to register your visitor for push notifications (e.g. after how many visits)</li>
<li>Which types of events should trigger push notifications (e.g. new posts, comments, updates to posts)</li>
</ul>
N.B.: This plugin requires your website to be served via HTTPS. Indeed, for security reasons, browsers enforce the HTTPS policy for the Push API and for Service Workers.

Web Push

Send push notifications to your visitors! Uses the W3C Push API.

Pushe Web Push Notification vs Web Push