These are top and recommended Marketplace PRO For Magento Ecommerce

1) Landofcoder Marketplace PRO:
Letting vendors/ sellers manage a wide range of things by themselves easily will take your website to the top.
Link: https://landofcoder.com/magento-2-marketplace-pro.html

2) Apptha marketplace
A fully functional & 100% customizable script that allows multi sellers to sell their products.
Link: https://www.apptha.com/

3) Cmsmart marketplace
Marketplace Multi Vendor Module for Magento 2 turn any magento store into marketplace website.
Link: https://cmsmart.net/magento-2-extensions/magento-multi-vendor