permissions

Content access

module_name
content_access
Description

Set permissions by content type (with the option of overriding node by node)

Categories
Tested by me
Yes
Drupal 8 support
Yes
Essential
Yes
Avoid
No
Deprecated
No

Permissions Filter

module_name
permissions_filter
Description

The admin permissions page can get pretty long. 

This lets you narrow it down by typing permission names into a text field.

Categories
Tested by me
Yes
Drupal 8 support
Yes
Essential
Yes
Avoid
No

Masquerade

module_name
masquerade
Description

Allows you to browse the site as another user (to see what they see) and then quickly switch back again.  A general Drupal recommendation is to create test accounts for each of your roles, so this is useful for testing them.  (As per notes, don't use it for anonymous access, just log out.)  Replacement for 'Switch User'.

Patch and known bug:

Categories
Tested by me
Yes
Drupal 8 support
Yes
Essential
Yes
Avoid
No