Cloudflare is described as 'Protects websites with front-end proxy, dynamic DNS, CDN, and firewall; blocks DDoS and targeted attacks, optimizes traffic, and analyzes threats' and is a very popular CDN in the network & admin category. There are more than 50 alternatives to Cloudflare for a variety of platforms, including Web-based, SaaS, Self-Hosted, Linux and Windows apps. The best Cloudflare alternative is DNS4EU, which is free. Other great apps like Cloudflare are Anubis, DigitalOcean, Cisco Umbrella and Duck DNS.
Gcore has totally free global DNS service the same as Cloudflare+free CDN plan with WAF