This plugin allows your visitors to simply like/recommend your posts instead of comment on it.

Add a button to like any post type.

Adds a beating heart to your toolbar

Like-it allows visitors to just "like" a post, preventing multiple meaningless comments or providing a faster user experience.

Easy Like Rating is a simplest, open-source rating plugin for WordPress. Give your favourite content a heart.

Display a very simple and customisable like button for your posts or any custom post type.