RealFlow | Cinema 4D particles can be converted into Thinking Particles (Cinema 4D Studio only) with a click on Fluid > Particles > Thinking Particles. This action also changes the particles' representation in the viewport and the typical TP crosses appear:
The Thinking Particles are now available under Simulate > Thinking Particles > Thinking Particles Settings... where you have several option for control their appearance. The "Fluid" containers are located in the "Particle Groups" field from where they can be dragged and dropped to MoGraph nodes, "Particle Geometry" objects, etc. A connection to XPresso is not available at the moment.