Scalable service-Oriented MiddlewarE over IP (SOME/IP) is implemented using the open source implementation of vsomeip.
The version that's implemented is vsomeip 2.0.1. QNX Software Systems redistributes the vsomeip package, but the binaries, tests, and test configuration files are included as part of the QNX Platform for ADAS. The installer includes prebuilt versions of vsomeip but also source that you can find in QNX installation directory/source, where QNX installation directory is the location where the QNX Platform for ADAS was installed on your host.