Jon Tejnung

This plugin will give you three alternatives for managing your WordPress updates:
<ul>
<li>Update automatically – This updates WordPress/themes/plugins automatically and sends an email to the site admin when an update has been performed.</li>
<li>Update automatically (no email) – Same as the first alternative, but without the email.</li>
<li>Inform about updates once a week – This will send an email to the admin once a week if there are anything that can be updated.</li>
</ul>
Notice that only plugins/themes that resides in the WordPress 
repository will be updated/informed about.
The plugin has not been tested and is not primarily made for multi site-installations.

Simple Automatic Updates

Activate automatic updates or weekly notifications for the site.

leftofcentre

www.mysitesmanager.com is the easy way to manage multiple WordPress sites. We take the headache out of managing lots of sites by giving you a simple dashboard that lists your sites and any updates that are available. Built for security, we do not store any login data. We do not store your login details or any other passwords or sensitive data. The way the system works is you add our plugin to your site. The plugin creates an xml file that lists any out of date app versions, plugins or themes. Our system reads this xml file and displays the data on your dashboard.
How does the plugin work? 
The plugin will run a daily cron job to check for updates and then write the details to the xml file. We then read this xml file from our system and write the data to your dashboard.
The plugin is not standalone you need a free account with www.mysitesmanager.com to use it.
The plugin is based on code from the WP Updates Notifier plugin (https://wordpress.org/plugins/wp-updates-notifier/) by Scott Cariss but we have substantially modified the code.
Features
<ul>
<li>Runs a daily check for updates to plugins, themes and WordPress. Then writes the details to an xml file.</li>
</ul>

MySitesManager Updates Checker

www.mysitesmanager.com is the easy way to manage multiple WordPress sites. We take the headache out of managing lots of sites by giving you a simple d …

Simple Automatic Updates vs MySitesManager Updates Checker