wpharvest

Documents for WooCommerce allows you to add downloadable documents to products in WooCommerce and display them on the frontend under a separate tab.
Ideal for adding downloadable User Guides, User Manuals, Size Charts, etc to your product pages.

Documents for WooCommerce

Add downloadable documents to products in WooCommerce

shivrajib

This plugin is for file management system with files/document version control ability. It keeps the files in its separate directory. It allows all file types like image, doc, word, excel, pdf, audio, video, archive etc. but admin can manage allowed file types. File download access can be restricted/controlled by user roles. Unlimited file versions can be added. Custom File Icons can be added from the Icons setting page.
Use shortcode [wfv]

WP File Version

This plugin is for file management system with files/document version control ability. It keeps the files in its separate directory.

Documents for WooCommerce vs WP File Version