theslink2000

This plugin doesn’t do anything on the surface but if you call the get_user_role() function then you can achieve one of two results.
Function
Returns the role of the specified user.
Usage
Parameters
$user_id 
(string)(optional) ‘username’
Return Values
(string) If no $user_id is specified in the function call the function will return the role of the currently logged in user, otherwise the role of the specified user will be returned.
Examples
$role = get_user_role(“admin”);
This will return “administrator”.
Notes
This plugin may call the following global variables:
$current_user 
$wp_roles 
$wpdb
This plugin is designed to work with any correctly made custom roles.

Get User Role

A simple plugin that add's the get_user_role() function to your site.

irenem

A simple tool that allows you to switch between user accounts without the hassle of logging in/out. It allows you to view, review and do what yours does to your site.
<h4>Features</h4>
<ul>
<li>
Switch between user account and to guest user.
</li>
<li>
Inherit all capabilities of the selected account, as if you are that very same user.
</li>
<li>
Helpful for developers, designers, and site owners.
</li>
</ul>

User Switcher

This plugin helps me very much when I need to test custom user roles.

I like it

This is really helpful plugin for testing my user's issue with my site. When I have only admin account I can easily switch to a random users and reproduce their issue. Thanks for the great solution.

Perfect tool for testing users issue

A helper tool to help you switch between user account without logging in and out.

Get User Role vs User Switcher