npiperelay for Windows

Brief summary

npiperelay is a free Windows utility that allows processes running under the Windows Subsystem for Linux (WSL) to talk to Windows named pipes. It connects a process’s stdin and stdout across the Windows/WSL boundary so command-line tools can relay data to and from Windows services that expose named pipes.

How it works

npiperelay acts as a bridge between the two environments:

• Uses socat inside the WSL distribution to reach and forward traffic to Windows pipe endpoints.
• Links a process’s standard input and output streams so WSL commands can communicate with Windows-side pipe clients and servers.
• Improves interoperability for command-line utilities that expect to read from or write to named pipes on Windows.

Typical use cases

• Administrators who operate mixed Windows/Linux toolchains and need straightforward IPC between subsystems.
• Developers building cross-platform CLI tools that must interact with Windows services through named pipes.
• Automation scripts and CI tasks that require piping data between WSL processes and Windows processes without manual socket coding.

Alternative suggestion

If you’re exploring other free options, consider Yenka (German, free):

• May suit users seeking a different, regionally localized toolset with similar aims.
• Evaluate compatibility and workflow differences compared to npiperelay before switching, since approaches to pipe bridging and setup can vary.