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What does a Hub do?

As the name suggests, a hub allows one or more xAP applications to share a connection to the xAP network on a single PC. This is a technical requirement because of the way PC networks work - by default, only one application can own a network connection on a given port at a time.

Hub Choices

There are three variants of hub in common use:

Stuart Booth's .NET v1.1 based hub for windows using xAP Framework.Net, which you can find here. This comes in three flavours: GUI, console and Windows Service.

Development of xAP Framework (xFx) its hubs has now been taken over by Edward Pearson. His enhanced xAP Framework v2 hubs are available from here.

Patrick Lidstone's lightweight hub runs under Linux as well as Windows (requires CygWin dll) can be found here.

Other Non Dedicated Alternatives

Whilst operating more than a single xAPplication on a single PC requires a Hub to be operational, many xAPplications offer a built-in Hub role if no Hub is detected when they start.

Currently I am only aware of xAPFramework.NET-based applications offering this behaviour.

Note: The link above is temporarily down