Plugins such as WooCommerce and Ninja Forms have a lot of extensions available to add functionality and each extension is usually a separate plugin. Depending on the functionality you need, extensions can add several additional plugins to the plugin management page in the backend of WordPress.
Plugin Groups is a free new plugin by CalderaWP that adds the ability to organize plugins by groups for easy filtering. For example, you can create a group called e-Commerce and add all plugins dealing with e-Commerce to the group. When you browse to the Plugins page, you’ll see a new filter at the top called e-Commerce. Clicking on it will display only the plugins within that group.
You can organize groups by clicking on a group’s name and dragging it up or down. One thing I noticed is that clicking the save button doesn’t appear to do anything, even though it saves the configuration. I recommend displaying a visual notification that tells me I clicked the save button and the configuration saved successfully.
I tested the plugin on WordPress 4.2 and it works as advertised. Plugin Groups is a nice way to organize and access plugins based on functionality. Plugin Groups should definitely come in handy for those who use 50 plugins or more. You can try Plugin Groups yourself by downloading it for free from the WordPress plugin directory.