Apache is a free and open-source cross-platform web server software.
Fathom is easy-yet-powerful website analytics that protects digital privacy.
Lightbox is small javascript library used to overlay images on top of the current page.
Open Graph is a protocol that is used to integrate any web page into the social graph.
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.