AudioKit Synth One - Free & Open-source iPhone/iPad Synth 🎹
Bosca Ceoil - A free, easy to use tool for creating music.
Sampulator - Make (and record) beats on your keyboard
Jeskola Buzz - Jeskola Buzz is an all in one digital audio workstation that allows you to edit music with the perfect blending by using modern tools and technology.
Logic Pro X - Music production.
Zynewave Podium - Podium is a modern digital audio workstation (DAW) for Windows.