WPWiredIn

User Role assigment Plugin for WooCommerce Multivendor Sites
Need help assigning multiple user roles when registering users on your WooCommerce Marketplace? Download the Multi Roles Vendor plugin and do just that! Supports WCMP, WCFM and Dokan marketplace!
Requirements
<ul>
<li>You need to have WooCommerce installed and activated</li>
<li>You need to have WCMP, WCFM or Dokan installed and activated </li>
<li>You need to have a WooCommerce User Login/Registration, or custom Login/Registration page setup</li>
</ul>
How the Plugin Works
Just activate the plugin, customize the settings and whenever a User registers on your multi-vendor site, they will be assigned a vendor role
Alterations/Editing
You may change the user role in the plugin to any WCMP, WCFM and Dokan roles, like pending vendor etc.
Versions and Pre-Realease
<ul>
<li>This is version 1.1 and it Supports WCMP, WCFM and Dokan Marketplace plugins. 
Enjoy!!!</li>
</ul>

Multi Roles Vendor

User Role assigment Plugin for WooCommerce Multivendor Sites

Tom Anbinder

Pablo Pacheco

WPFactory

Omar AlDabbas

Kousik Mukherjee

Algoritmika

Thanks to IT

Marketplace for WooCommerce lets users sell on your store once they become vendors, earning commissions for their sales.
Check some of its features:
<ul>
<li>Vendors can customize their public pages.</li>
<li>Admins can setup the url slug of vendors public pages.</li>
<li>Admins can choose a custom label for vendors.</li>
<li>Users have to apply to become vendors.</li>
<li>Admins can setup vendors capabilities to upload files, view orders, publish products automatically and more.</li>
<li>Admins can block vendors at any time.</li>
<li>Setup commissions by percentage or fixed value.</li>
<li>Commissions can be manually or automatically created on order complete, processing, you choose it.</li>
<li>Vendor’s products have a tab displaying info about the vendor, like its logo and description.</li>
</ul>

Marketplace for WooCommerce

It has all important features to let visitors sell something on your website.

PS: I had to enable cutomer registration for my WooCommerce 3.1.2 in:
WordPress Admin panel -> WooCommerce -> Settings -> Accounts -> 
Customer registration ->
Enable customer registration on the “My account” page.

Multi Roles Vendor vs Marketplace for WooCommerce