Chisel
A fast TCP/UDP tunnel over HTTP
...It packages both client and server functionality into a single Go-based executable, which makes it practical for fast deployment across different environments. The project is especially useful when direct network access is restricted but HTTP or HTTPS traffic is still allowed. It can expose internal services, create secure endpoints, and support reverse forwarding when the reachable side needs to initiate the tunnel. Chisel also supports proxy-aware setups, including SOCKS5 and HTTP CONNECT scenarios. Its design favors simplicity, portability, and reliable reconnection behavior for practical network tunneling workflows.