- Chosen | drupal.org
Chosen uses the jQuery plugin to make your <select> elements more user-friendly.
- Node access node reference | drupal.org
Gives content access permissions to users if they have access to content that is referenced with node reference. Checks view, update, and delete grant operations, and can pass those on to the referencing content, or trigger a different grant configuration according to settings.
- Node access user reference | drupal.org
Gives content access permissions to users for content that references the users with user reference.
This is great if you want your content authors to be able to choose additional authors, or choose who can view their content, as well as being able to display the list of authors or viewers within your content, or in views displays.