The verdict
For most small B2B teams, I'd pick Process Street, because it solves a problem they actually have: the same procedure done differently each time. Pick Pipedream only if you have engineers and you are building an agent or product where each customer connects their own accounts. I would not start a new automation project on Pipedream's old Workflows product. If you want a workflow tool, look at Zapier, Make or n8n instead. Process Street has no free plan, while Pipedream development is free and production use needs a paid plan.