Rename Roles Without Changing Them
Changes the names roles show on the Users screen and in role menus, for example "Subscriber" to "Member", without touching capabilities or the database.
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: Rename Forum Roles
Changes the names of bbPress forum roles shown next to members' posts, for example "Participant" to "Member" and "Keymaster" to "Admin".