NCS Expert is not a standalone program but is included in the package. It is widely available for free across enthusiast communities:
How to Code your BMW with NCS Expert and NCS Dummy | OHP Tools
NCS Expert Download for Windows 7: The Complete Guide is the cornerstone of BMW E-series coding, allowing owners to unlock hidden features and personalize their vehicle’s electronic control units (ECUs). While newer operating systems exist, Windows 7 remains the preferred environment for many enthusiasts due to its high compatibility with legacy BMW Standard Tools. What is NCS Expert?