Assign a Role Based on the Email Domain
Gives people who register with certain email domains a different role automatically, for example staff at your company become Contributors.
Snippet Library
Users snippets for WordPress
Snippets for user accounts, roles and profiles: extra profile fields, new columns in the users list, last-login tracking and tighter control of what each role can do. Handy for membership sites, client sites and teams with many authors.
bbPress: Limit Certain Forums to Specific Roles
Lets only chosen roles open particular forums and their topics, for example a "Staff" forum for editors or a "VIP" forum for paying members.
bbPress: Only Staff Can Start Topics in Announcement Forums
Stops regular members from creating new topics in chosen forums, such as Announcements, while still letting them reply.