How to organize data exchange between applications in Qt?

Question

Qt

There are two (or more) applications (different) running on the same machine. These applications (clients) must send the progress of tasks to another application (server) that is also running on the same machine. The server does not send anything to clients, i.e. communication is one-way. All applications are written in Qt. It is desirable that the network is not involved in the data exchange - without the Qt Network. Data is sent at high speed: 50 to 100 short text messages (up to one hundred characters) per second.
How can this be organized?

Answer 1

If you don't want sockets, then pipes. Within the same machine, the pipes will be even faster.
Both sockets and pipes are cross-platform.

Answer 2

Windows? Then com.