The tool is really easy to use with very minimal learning curve and I couldn't find a which can be low code tooling in lamda world . I think the tool is really is easier and flexible compared Mulesoft based on my experience.
MuleSoft - MuleSoft provides an integration platform for connecting any application, data source or API, whether in the cloud or on-premises.
Apache Camel - Apache Camel is a versatile open-source integration framework based on known enterprise integration patterns.
Plant an App - The speed of low-code at the power of custom coding
Apache Kafka - Apache Kafka is an open-source message broker project developed by the Apache Software Foundation written in Scala.
Stamplay - Application integration & workflow automation for businesses
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.