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 User & Term plugins (see below)
Also checkout
- WP Chosen
- WP Pretty Filters
- WP Media Categories
- WP Term Order
- WP Term Authors
- WP Term Colors
- WP Term Icons
- WP Term Visibility
- WP User Activity
- WP User Avatars
- WP User Profiles
