Custom apps for the BMW MGU / iDrive 7 head unit (shift lights, virtual dyno, brake and drag timers, G-meter, fault scanner) plus an SDK kit to build and install your own.
Enable root SSH on BMW MGU head units (iDrive 7 / ID8 BDC3 / ID8 BCP) over ENET - flash the debug image, enroll, persistent SSH with no B7F8E5 DTC, and a unique per-car key.
CarCast — a CarPlay receiver for macOS, Windows, iPhone and iPad (iCarCast), and Android tablets and head units, with a protocol inspector: release notes, docs and issues. Source is not public.