AddThis is a social bookmarking service that can be integrated into a website with the use of a web widget.
Dreamweaver is a development tool for creating, publishing, and managing websites and mobile content.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.