Every single plugin mentioned here is tested with Tutor LMS plugin.
WP Fusion helps you to tag users and courses based on different activity and keywords. Then you can use those tags with your favorite CRM software.
Great for adding mathematical equations to the lesson content area. This plugin enables mathjax (http://www.mathjax.org) functionality for WordPress
Create, print & automatically email PDF invoices & packing slips for WooCommerce orders.
Improve your WordPress SEO: Write better content and have a fully optimized WordPress site.
This is an extension for Gamipress. You need to install the main plugin before installing this one.