Use a third-party CSS or JS Framework, a self-hosted service like a CRM, or a third-party service with the site.
Slick and Twitter Pull integration to have tweet slider/ticker blocks.
This module provides "like" and "dislike" widgets for contents inside Drupal, making it easiers to promote features as the one seem on many social network websites.
SwipeHQ integration for the Drupal Commerce payment and checkout system.
This is an experimental module.
I'm not sure exactly what it will do yet, but will integrate with the FITBIT API and integrate with Drupal users.
The Google Glass module provides an interface to the Google Mirror API within Drupal.
Currently it handles and stores authentications.
Rules integration includes:
Integration with the Leaflet extension library: Leaflet Plugins.