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Cloudflare Tunnel creates a secure connection between your origin server and Cloudflare's edge network, allowing you to host services without exposing your server's IP address. Previously known as Argo Tunnel, it provides free, easy-to-set-up secure tunnels with automatic HTTPS.

localtunnel is a free, open-source tool that exposes your localhost to the world via a public URL. Easy to use with no account required, it creates a tunnel through which anyone can access your local server from the internet. Great for quick testing and demos.

ngrok is a popular reverse proxy tool that creates secure tunnels to localhost, allowing you to expose local servers to the internet with a public URL. It supports custom domains, TLS encryption, and provides an intuitive dashboard for managing tunnels and inspecting HTTP traffic.