Apache Camel - Apache Camel is a versatile open-source integration framework based on known enterprise integration patterns.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
IBM App Connect - IBM App Connect is the all-in-one integration tool for connecting apps, integrating data, building APIs and acting on events
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
Software AG webMethods - Software AG’s webMethods enables you to quickly integrate systems, partners, data, devices and SaaS applications
n8n.io - Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.