Cloudflare is an open-source project; it may not be called VPN but it works like a VPN. It helps your website to open fast and you can open those websites which you can’t open with it. It also protects you against attacks like DDoS is like a firewall that can prevent malicious traffic
Is Cloudflare Free?
Cloudflare is not a free service, though if you use it on Windows, you don’t need to pay any money except for windows