About
Built around one idea
Reaching a single machine should not require joining a network, opening a firewall, or installing a driver on somebody else's computer.
Why it exists
It started with a database on a machine we could log into but not install anything on. Everything needed was already there — the data, the port, the access — and none of the tools were. The options were a port that should not be open, a VPN nobody would approve, or another hour working inside somebody else's session. piertun is the fourth option.
Where we are
The transport works and we use it daily. What is finished, what is being built and what is only planned is in the roadmap below — it is kept current, and everything on the site is labelled to match it.
Roadmap
Where this is going
So you can tell whether the thing you need is on the list. If it is not, tell us.
In beta testing
- TCP access to a remote service
- Direct P2P with encrypted relay fallback
- NAT and CGNAT traversal
- Terminal one-liner, no-install, no-admin
- Several tunnels at once
- Expiring install links
- Windows and Linux
Under development
- Serial / COM port access
- Stronger client-side key handling
- Scoped permissions and audit trail
- Always-on endpoint
- macOS builds
Coming soon
- Virtual COM port on Linux and macOS
- Windows COM-to-COM via existing virtual-COM software
- Remote terminal, off by default
- Session recording
- Scoped access to more devices through one connector
- UDP tunnelling
- Signed installers and unattended mode
- Team accounts and revocation
- Bring your own relay
- Independent security review
Anything in the first column is already described on the how it works page. Anything that is not finished is labelled as such wherever it appears, including on the trust page.
The quickest way to judge it is to run it
Two minutes, no credit card, and nothing installed into either operating system. If it is not for you, the roadmap above will tell you whether it might be later.
Get started — free