ActivePieces

ActivePieces is an open-source automation engine that lets you build workflows connecting your favorite tools without code. It includes 500+ integrations (Slack, Google Sheets, Stripe, Airtable, Zapier, Make.com), drag-and-drop workflow builder, and conditional logic to route data between systems. You can self-host it or use the managed cloud version, keeping your automation logic private.

Teams frustrated by Zapier's per-task pricing find ActivePieces attractive because it charges per flow, not per execution. It's well-suited for scaling repetitive work like data syncs, notification routing, and form processing. The open-source model lets you extend it with custom code when the built-in connectors aren't enough, and the self-hosting option gives you full control over sensitive workflows.