Fitbit/golden-gate

Golden Gate was a significant engineering effort by Fitbit to move away from fragile, proprietary serial-over-BLE protocols toward a more robust, standardized IP-over-BLE architecture. While it represents a sophisticated 'Infrastructure-grade' codebase, its defensibility has eroded to a 4 because the project is effectively 'stale' or in maintenance mode (zero velocity, 6 years old). Following Google's acquisition of Fitbit, internal development has likely shifted into private repositories or integrated into the broader Android/GMS ecosystem. From a competitive standpoint, it faces existential threats from modern IoT standards like Matter (which uses Thread/BLE for commissioning) and the maturing networking stacks in RTOSs like Zephyr. Zephyr's IP-over-BLE (6LoWPAN) implementation is now the industry go-to for new embedded projects. Platform domination risk is high because the OS providers (Apple/Google) ultimately control the GATT/L2CAP abstractions that this framework relies upon; any breaking change in the mobile Bluetooth stack can render third-party IP-over-BLE frameworks obsolete. For a developer today, using Golden Gate represents high technical debt compared to adopting the Matter standard or Zephyr-based networking.