We just noticed a nice feedback from a mORMot user.

Vojko Cendak commented the well-known DataSnap analysis based on Speed & Stability tests blog article written by Roberto some months years (!) ago.
It is not meant to be the final word, perhaps there was some tuning possible for RTC (which is told to be very reliable), but it is worth a look:

We used 3 products: RO, RTC and Mormot.. I won’t speak about RO ( slow and heavy ). We tried RTC but was too very slow and CPU consuming in getting lots of 1000 .. 5000 dynamically fetching OPC tags (let’s say list of small objects) – at least once per second (one client). I mean Mormot is FAST and we’re glad to be so. We use Mormot in actual productions 24/7 on several sites: servers don’t even blink on client requests and run smoothly and reliably.

Thanks for the kind words!
We have a lot of feedback, around the world, from users of our little Open Source project, very happy with its abilities.
We try to make it always better! Open Source, and Delphi as a platform, do rock!