External FMC for Boeing 737

External EasyFMC is a specific product, it is an independent executable that can run on the same computer as Flight Simulator or on a different computer on the same network (remote mode). It does not require the basic version of EasyFMC.
It is compatible with FSX, P3D and FS2004.

External EasyFMC is a separate and independent product. It requires FSUIPC to establish the communication between FSX/P3D/FS2004 and the External EasyFMC application, and optionally requires WideFS for network communication if you want to have FSX/P3D/FS2004 and External EasyFMC running on 2 different computers (remote mode). By Eric Marciano