The purpose of this list is to track and compare tunneling solutions. This is primarily targeting toward developers who want to do things like exposing a local webserver via a public address.

Software

• ngrok 2.0 - Probably the gold standard and most popular. Closed source. Lots of features, including TLS and TCP tunnels. Doesn't require root to run client.
• localtunnel - Written in node. Popular suggestion.
• PageKite - Comprehensive open source solution with hosted options.
• ngrok 1.0 - Original version of ngrok. No longer developed in favor of the commercial 2.0 version.
• frp - Seems to be a pretty comprehensive open alternative to ngrok.
• holepunch.io - Has nice hosted solution. Uses SSH for muxing. (code).
• CloudFlare Argo Tunnel - $5/mo + $0.1/GB. Integrates with Argo smart routing. Client source code is available.
• Telebit - Written in JS. Open source.
• slt - Open source TLS proxy from the creator of ngrok. Supports SNI.
• serveo - Mentioned quite a bit the last couple years, but appears to be down currently. Simply uses SSH for tunneling.
• Tailscale - Built on WireGuard. Closed source. Easy to use. Doesn't include an HTTPS proxy on the public side, but could be combined with nginx/Caddy/etc.
• sshuttle - Open source project originally from one of the founders of Tailscale. Server doesn't require root; client does. Explicitly designed to avoid TCP-over-TCP issues.
• expose - ngrok alternative written in PHP.
• chisel - Another HTTPS+SSH option.
• tunneller - Open source. Written in Go.

Discussions of different solutions and tradeoffs

• HN comment about needing Namecheap + CloudFlare + ngrok.