CloudFlare - Cloudflare is a global network designed to make everything you connect to the Internet secure, private, fast, and reliable.
Paessler PRTG - An advanced network monitoring solution to monitor network up/downtime, traffic and usage.
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
MRTG - MRTG (or Multi Router Traffic Grapher) is an open-source network monitoring tool.
KeyCDN - KeyCDN is a high-performance Content Delivery Network (CDN). Lowest price globally at $0.04/GB with HTTP/2 Support and free Origin Shield.
Akamai - Akamai is the leading content delivery network (CDN) services provider for media and software delivery, and cloud security solutions.