Slimpack — Lightweight Jetpack. Super-fast performance without modules that requires contracting WordPress.com.
Show a pop-up business card of your users' gravatar profiles in comments.
A bunch of groovy enhancements for using Gravatars on your site.
Slim version of Jetpack unlinked from WordPress.com :) Supercharge your self-hosted wp site even you're NOT WP.COM users.
WordPress Hovercards is a lightweight plugin that integrates hovercards for your WordPress posts & pages.
Gravatar Hovercards shows the commentator's profile information from Gravatar on hovering the cursor on that commentator's gravatar.
This plugin brings Hovercard popups for your commenters via Gravatar
This plugin enables Gravatar Hovercards in Self Hosted WordPress Blogs. Code by Ottopress, Pluginized By Abhik.