Maintenance - easy configure and customize coming soon, under construction page when site have updates, changes or in development process.
Instapage plugin - the best way for WordPress to seamlessly publish landing pages as a natural extension of your WordPress blog or website.
Allows you to quickly create a maintenance/coming-soon page. Use this plugin whenever your site is down for maintenance or undergoing development.
Add a fully customizable splash page for your WordPress site, it's simple and easy to use.
Splash screen box for first time visit or new visitors
Display a splash screen before allowing visitor to see blog.
Easily Create Converting Landing Pages in WordPress With WP Landing Page
This plugin adds maintenance mode functionality to your website
This plugin allows you to work on your website and have a custom splash page at the same time.