QuarantineWP is a simple plugin that temporarily puts your WordPress site into a "read only" - Code Freeze state for Maintenance Mode or migration. It's most useful when you are migrating a site. or just want to prevent changes.
A very simple plugin for the maintenance mode. All You have to do is turn it on, so that the logged in users and those logged in without permission to manage the website see the message about the technical break.
You can use this plugin to show the website maintenance scheduled information to the visitors of your website or put your site into full maintenance mode.