An F# binding for the ZeroMQ distributed computing library. For more information, please visit:
F# C C# Other
Latest commit ab447c5 Jul 18, 2016 @pblasucci pblasucci committed on GitHub Released 12.2.1


An F# binding for the ZeroMQ distributed computing library.

fszmq is an MPLv2-licensed F# binding for the ZeroMQ distributed computing library. It provides a complete binding to versions 2.1.x, 3.2.x, 4.0.x, 4.1.x of ZeroMQ (Note: prior to 4.0.0, each binding is a separate branch in git, as there are some non-compatible differences). This library is primarily designed to be consumed from F#. However, where possible, the library has been designed to appear "friendly" when consumed by other CLR languages (C#, et aliam).


The fszmq library can be installed from NuGet:

PM> Install-Package fszmq

Please note: the fszmq NuGet package ONLY provides the managed fszmq.dll file. You need to provide the native libzmq file(s) appropriate to your platform.


At this point in time, fszmq has been tested on the following platform/architecture/runtime combinations:

  • 32-bit Windows XP (running against .NET)
  • 64-bit Windows Server 2008 R2 (running against .NET)
  • 32-bit and 64-bit Windows 7 (running against .NET or Mono)
  • 32-bit and 64-bit Windows 8 (running against .NET or Mono)
  • 32-bit and 64-bit OS X (running against Mono)

Other platform/architecture/runtime combinations should work (so long as .NET or Mono are supported and there is a native libzmq port) and will be tested in due course..

A note about versions

In the past, several attempts were made (poorly) to keep the version of fszmq synchronized to the version of libzmq. Starting with verion 12.0.0 (which is the twelth release... version 4.0.9 was the eleventh release), this is no longer done. Instead, fszmq is versioned independently. The versions of libzmq supported by each version of fszmq are as follows (where 'x' means any number >= 0):

fszmq version libzmq versions supported
12.2.0 4.x.x
12.1.1 4.x.x
12.1.0 4.x.x
12.0.1 4.0.x
4.0.9 4.0.5
4.0.8 4.0.5
4.0.6 4.0.5
4.0.5 4.0.5
4.0.4 4.0.4
3.2.7 3.2.5
3.2.5 3.2.5
2.2.1 2.2.1
2.2.0 2.2.0
2.1.11 2.1.x
2.1.10 2.1.x
2.1.6 2.1.x

More information about ZeroMQ is available at

Issues, questions, and concerns may be directed the the Issue Tracker.

If you'd like to help develop and maintain fszmq, please read about CONTRIBUTING.

This project is released under the MPL (v2) license.
This project's documentation is released under the MIT license.