frp is described as 'Fast reverse proxy that allows you to expose a local server located behind a NAT or firewall to the Internet. It currently supports TCP and UDP, as well as HTTP and HTTPS protocols, enabling requests to be forwarded to internal services via domain name' and is an app in the security & privacy category. There are more than 10 alternatives to frp for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best frp alternative is OpenVPN Connect, which is both free and Open Source. Other great apps like frp are WireGuard, ZeroTier, WG Tunnel and ngrok.
Btunnel gives you power to expose an http app running in localhost, helps you to share your local filesystem as well as any TCP app to the internet. Some of the features of btunnel are -
