This Plugin allows you add a dynamic Address Book [or multiple] to your Roundcube Instance which will be filled with the users which are on the mail server, just like a Global Address Book, previously this was done with the Generic Global Address Book plugin and an SQL Command on a CRON Job, this only supported one Book easily and more would require a complex configuration and also wasting DB Space as each entry was Saved a second time, this just uses a read-only MySQL/PgSQL View and even supports User Level Aliases!
This plugin requires you have root permissions on your MySQL/MariaDB/PgSQL Server, and that you create a MySQL/PgSQL View executing one of the SQL files shipped with the plugin.
If you have any questions or suggestions for this Plugin, either reply down below, email me, or create an 'Issue' thread on the GitHub page! Thanks for your interest!