Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.
EthicalAds is a privacy-preserving ad network targeting developers.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.