WP User Groups allows users to be categorized using custom taxonomies & terms.

• "Groups" & "Types" are created by default, and can be overridden
• More user group types can be registered with custom arguments
• Edit users and set their relationships
• Bulk edit many users to quickly assign several at once
• Filter the users list to see which users are in what groups
• Not destructive data storage (plugin can be enabled & disabled without damage)
• Works great with all WP Term Meta plugins (see below)

• Download and install using the built in WordPress plugin installer.
• Activate in the "Plugins" area of your admin by clicking the "Activate" link.
• Visit "Users > Groups" and create some groups
• Add users to groups by editing their profile and checking the boxes

No. There are no new database tables with this plugin.

No. All of WordPress's core database tables remain untouched.

No. This is best left to plugins that choose to integrate with this plugin.

The WordPress support forums: https://wordpress.org/support/plugin/wp-user-groups

Yes, please! The number of users needing user groups is growing fast. Having an easy-to-use API and powerful set of functions is critical to managing complex WordPress installations. If this is your thing, please help us out!