FL Studio Mobile - Create & save multi-track music projects on a smartphone
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Splice Beat Maker - Make and share beats in your browser
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
Sampulator - Make (and record) beats on your keyboard
n8n.io - Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.