VDAB and Node-RED are both programming platforms that utilize the visual flow-based programming
They are both very appropriate for implementing monitoring, control and streaming applications for the Internet of Things as well as for other varied applications.
Dataflow programming is a programming paradigm that models a program as a directed graph of the data flowing between operations. Applications are built by assembling building blocks into processing flows.
Visual dataflow programming allows the assembly of dataflow programs using a visual UI.