Patrick Chia

Easy way to generate a html5 cache manifest file for wordpress themes.Activate the plugin in WordPress Plugin Panel and the plugin will create a cache manifest file in your current blog theme?s directory.
Your blog site served with the content type text/cache-manifest. If you are running an Apache-based web server, you can probably just put an AddType directive in the .htaccess file at the root of your web directory: 
 AddType text/cache-manifest .manifest

Cache Manifest for WordPress Themes

Anop Goswami

This is one of the best plugin which creates offline cache and increases loading time and speed of your wordpress website.

Cache Manifest for WordPress Themes vs WP Offline Browser