RPCX stands for Rob Papen ConcreteFX.
This is a new partnership which is developing for you new "virtual ROB PAPEN synthesizers" and "effect plug-ins".
RPCX is formed by sound designer Rob Papen and music software developer Jon Ayres.
For porting into the Mac platform RPCX is using the outstanding software skills of Jacek Kusmierczyk.
The goal of RPCX is to let you enjoy making music with their "virtual ROB PAPEN plug-ins".
These developed instruments are displaying very well what is possible in todays virtual instrument and effect plug-ins.
Many features, but still easy to use and very musical.
No wonder that these products are loved by pro's!