Unlimited automation
Workflow automation with no execution quota — the price does not move when the work does.
Self-hosted automation replaces per-task billing with a fixed monthly instance. Activepieces, Windmill, Node-RED and Kestra all run as single-tenant deployments here; 200 runs a month and 200,000 cost the same, because the constraint is your plan’s CPU rather than a billing meter.
Hosted automation platforms price by task, execution or step. That model is fine while a workflow is an experiment and painful once it works — the better your automation gets, the more it costs you. Self-hosting inverts that: the instance is the cost, and throughput is an engineering question rather than an invoice.
Which engine depends on how your team thinks. Activepieces is closest to the SaaS experience with a large library of integrations. Windmill suits people who would rather write a Python or TypeScript function than drag a node. Node-RED owns event-driven and device work. Kestra is for scheduled data pipelines that belong in version control. We do not sell n8n — the reason is on our licensing page, and one of these four is almost always the right substitute.
The applications in this stack
Activepieces
Open automation with hundreds of integrations — and no execution quota.
from $5.99/moDetails →
Windmill
Turn scripts into workflows, schedules and internal apps.
from $11.99/moDetails →
Node-RED
Wire events, devices and APIs together on a canvas.
from $5.99/moDetails →
Kestra
Declarative orchestration for data and AI pipelines.
from $11.99/moDetails →Straight answers
Why is n8n missing from this list?
Is there really no run limit?
Can workflows call an AI model?
Put your AI stack on your own box
Pick an app, pick a size, and have it running today. Month to month, cancel whenever.