https://n8n.io/ https://n8n.io/, https://pipedream.com/ https://pipedream.com/, https://github.com/huginn/huginn https://github.com/huginn/huginn, https://noder

https://n8n.io/ https://n8n.io/, https://pipedream.com/ https://pipedream.com/, https://github.com/huginn/huginn https://github.com/huginn/huginn, https://nodered.org/ https://nodered.org/, https://automatisch.io/ https://automatisch.io/, https://www.activepieces.com/ https://www.activepieces.com/ and theres a lot more... I've used n8n, pipedream, node-red, and huginn (a while back), but imo n8n has been the simplest off the shelf.