The flow diagrams are executed on a remote computer (e.g. Raspberry Pi) using the flow program. The flow web app (flow user interface) sends messages to the flow program using a websocket connection.

Data flow diagrams help you visualize and document your data pipeline. ... or an API. A destination is an entity that receives data from the system, such as a dashboard, a report, or an application.

Screenshot Flow is a really great example in that context. Screenshots are something that we usually don’t pay much attention to, but with this app, you can literally draw a diagram using screenshots ...