WPBakery Page Builder (formerly Visual Composer) does not offer multisite or developers license at the moment. In terms of licensing we fully rely on Envato standards and at the moment there are two licenses available:
- Regular/Single use license
- Extended license
None of these two allow usage of WPBakery Page Builder on several sites independently. In case you want to use WPBakery Page Builder on several sites be sure to purchase one Regular license per each site. Read more about licensing.