Apache is a free and open-source cross-platform web server software.
Appointy is a cloud-based scheduling solution that helps professionals and businesses to manage their appointment scheduling activities and routines.
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.
Varnish is a reverse caching proxy.
Vimeo is a video hosting, sharing and services platform. Vimeo operation an ad-free basis by providing subscription plans.