Just fyi we (https://n8n.io/) are not OSI approved open-source, rather https://faircode.io/ licensed. Very similar but not the same (in short, you can use it for free, but you can not take the code and commercialize it).

Additionally also important to mention that both services currently do not have native nodes/integrations. So it still can be done easily via an HTTP Request node but you would have to check out their API documentation.

Integromat is transitioning to https://make.com