AddThis is a social bookmarking service that can be integrated into a website with the use of a web widget.
Apache is a free and open-source cross-platform web server software.
PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.
Pure CSS is a set of small, responsive CSS modules that can be used in web projects.
SWFObject is an open-source JavaScript library used to embed Adobe Flash content onto web pages.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.