n8n

n8n is my favorite open-source workflow tool for complete data control. Its visual interface connects hundreds of apps while keeping your data private and secure.

You can self-host n8n on your own servers—perfect for strict compliance needs. The intuitive workflow editor makes complex automations simple, while developers can extend it with custom JavaScript. Available in both cloud and self-hosted versions, it's the rare tool that balances user-friendliness with serious power.