n8n
by n8nWorkflow automation platform with a node-based editor, AI Agent nodes and MCP support. You can use n8n's cloud or self-host it, and the Community Edition is free on GitHub. It bills per workflow execution, not per step.
Good
- Free Community Edition you can self-host
- Billed per full workflow run, however many steps it has
- Unlimited users, workflows and integrations on every plan
- Agents, MCP and AI nodes included from Starter
- Write custom code inside workflows
Watch out
- Harder for non-technical users than Zapier
- Self-hosting means you run servers, updates and backups yourself
- Cloud prices are listed in euros
- Business plan is self-hosted only