The Delacor Queued Message Handler (DQMH®) is a free product based on the National Instruments Queued Message Handler Project Template (NI QMH).
More information can be found at
Over the last few years, we not only used DQMH very heavily, we also started building additional features around the DQMH core.
Information on the HSE-specific modifications and additions to the DQMH Framework:
HSE DQMH Flavour