Elite Licenser is a WordPress plugin for any types of product licensing. It also manages product updates, auto generates license code, built in Envato licensing verification system, full license control and more. It has full set of API, so you can handle it by other applications as well. One app handles license of all your products. It will make the WordPress as license server. You can license any product with any language (PHP, .Net, Java, Android, etc.). Also you can add licensing to more than one WordPress plugin or theme and it can be installed on same WordPress.
Content Egg is all in one sollution for creating profitable websites, affiliate websites, price comparison, deals and product reviews.
Instantify by DaftPlug is a AIO plugin that combines Progressive Web Apps, Google AMP and Facebook Instant Articles and work them together to achieve amazing preformance and user experience on every possible platform. Plugin is compatible with any WP configuration. You have controll on every setting and with powerfull admin panel.