AddThis is a social bookmarking service that can be integrated into a website with the use of a web widget.
Google Analytics is a free web analytics service that tracks and reports website traffic.
LiteSpeed is a high-scalability web server.
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.
PHP is a general-purpose scripting language used for web development.
Quantcast Measure is an audience insights and analytics tool.