SaaS

• https://ngrok.com/
• https://burrow.io/
• http://nip.io/
• https://sslip.io/
• https://expose.dev/

Wireguard

• https://tailscale.com/

Selfhost

• https://github.com/ekzhang/bore
• https://github.com/fatedier/frp
• https://github.com/rathole-org/rathole
• https://github.com/localtunnel
• https://github.com/jpillora/chisel