Comment by Towaway69

If anyone with time, money and resources wants to revive the ideas of Yahoo! Pipes then I would suggest using Node-RED[^1] as a good starting point.

It has the advantage of being open source, has well defined and stable APIs and a solid backend. Plus 10+ years of constant development with many learnings around how to implement flow based programming visually.

I used the Node-RED frontend to create Browser-Red[^2] which is a Node-RED that solely executes in the browser, no server required. It does not support all Node-RED functionality but gives a good feel for using Node-RED and flow based programming.

The second project with which I am using Node-RED frontend is Erlang-Red[^3] which is Node-RED with an Erlang backend. Erlang is better suited to flow based programming than NodeJS, hence this attempt to demonstrate that!

Node-RED makes slightly different assumptions than Yahoo! Pipes - input ports being the biggest: all nodes in Node-RED have either zero or one input wires, nodes in Yahoo! Pipes had multiple input wires.

A good knowledge of jQuery is required but that makes it simpler to get into the frontend code - would be my argument ;) I am happy to answer questions related to Node-RED, email in bio.

[^1]: https://nodered.org

[^2]: https://cdn.flowhub.org

[^3]: https://github.com/gorenje/erlang-red