This is a very lightweight plugin that synchs WooCommerce Memberships (and optionally Subscriptions) to Klaviyo.

Simple plugin for Beaver Builder's Beaver Themer to enable conditional logic based on WooCommerce Membership status

Allows to sync users with every status of your WooCommerce Memberships plans with MailChimp lists.

WP User Merger is a WordPress plugin that allows you to merge two different users with seletable user fields.