There are 1 repository under ble-midi topic.
MIDI over Bluetooth Low Energy (BLE-MIDI) 1.0 for Arduino
MIDI over Bluetooth LE driver for Android 4.3 or later
Package javax.sound.midi porting for Android
Node.js package for interfacing with Teenage Engineering's Ortho Remote
5-PIN DIN cable MIDI to BLE-MIDI bridging with Arduino-compatible boards
A Pico W Bluetooth LE MIDI adapter for any class compliant USB MIDI device
A Bluetooth LE MIDI 1.0 server peripheral demo for the Raspberry Pi Pico W
How to find my MIDI projects and related software libraries
Piano lights with ESP32 and WS2812 led strip, using a BLE connection
A Zephyr implementation of the BLE-MIDI (MIDI over Bluetooth low energy) service specification.