Constant Contact is a marketing automation and email marketing solution.
Google AdSense is a program run by Google through which website publishers serve advertisements that are targeted to the site content and audience.
Google Analytics is a free web analytics service that tracks and reports website traffic.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
ReadSpeaker is an intuitive text-to-speech API that converts text into natural-sounding audio files for websites and applications.