Love it or hate it, Jetpack can be a huge help when running your WordPress website. Jetpack offers a ton of features for free.
Not everyone has a WordPress.com account, however, so author “Wingerspeed” decided to fork Jetpack into a un-hooked version that doesn’t require a WordPress.com account. (some features are unavailable though.)
WordPress.com stats, Subscriptions, Photon, and Push Notifications are just a few of the features that require a connected WordPress.com account. But some of the features that you can use without a WordPress.com account are Carousel, Contact Form, Shortcode Embeds, and the Mobile Theme.
This is a feature-packed version of Jetpack that doesn’t require a WordPress.com account. So if that’s how you want to roll, go ahead and grab Slim Jetpack. If you need some of the services that require a WordPress.com account, go ahead and grab the normal version of Jetpack.