There are 3 repositories under coremidi topic.
A modern C++ MIDI 1 / MIDI 2 real-time & file I/O library. Supports Windows, macOS, Linux and WebMIDI.
Python bindings for the cross-platform MIDI I/O library RtMidi
Simplest MIDI Swift library
Powerful polyphonic synthesizer for iOS that relies on sound fonts for generating audio - https://bradhowes.github.io/SoundFonts/
MIDI data structures for Swift. Send MIDI events in human language.
Aeolus is a high quality pipe organ emulator using additive synthesis.
Play MIDI files from the command line on macOS. Supports CoreMIDI devices.
Simple Demo of WebMIDIKit
OpenXTalk Builder FFI Wrapper for Apple's CoreMIDI
Core MIDI Framework C API wrapper for Python built on ctypes.
A SwiftUI lab application to test and SwiftMIDI and SwiftMIDICenter
OpenXTalk Builder Module to control Apple's AudioUnit Sampler Synth
OXT Builder FFI Wrapper for Apple's AVMIDIPlayer
A Midi Framework based on SwiftMidi that adds Codable and Observable protocols to CoreMidi objects