OpenWOP openwop.dev

Checked 4 October 2026. Figures for n8n come from its own docs, licence, repository and blog.

At a glance

PropertyOpenWOPn8n
What it isA wire protocol plus a conformance suiteA low-code workflow automation platform with AI features (docs)
LicenceSpec CC BY 4.0, code Apache 2.0 (OSI-approved)Sustainable Use License, "fair-code"; n8n says "we do not call ourselves open source" (FAQ)
Who it's forDevelopers building hosts and clientsBuilders on a visual canvas, plus code nodes
IntegrationsSigned packs; 44 in the reference app2,285 listed on its integrations page
Where state livesAn append-only event log per run (events)Execution data in SQLite or Postgres
Human approvalApproval interrupts (interrupt)Send-and-wait approvals and human review of AI tool calls (docs)
ReplayFork without repeating side effects on hosts that advertise replay (replay)Retry executions and debug past runs in the editor (docs)
PortabilityOne run API across compatible hostsWorkflow JSON that runs on n8n
AdoptionNew: the spec repo started in May 2026About 206,000 GitHub stars

When to choose n8n

  • You want to automate business processes visually, connecting SaaS tools without writing a service.
  • You need a large integration catalogue and templates now.
  • Non-developers on your team will build and maintain the workflows.

When OpenWOP fits

  • You are a developer building an agent platform or runtime and want a defined run contract: approvals, event log, replay and conformance.
  • You need the same run behaviour across hosts, not inside one product.

OpenWOP is months old, has one steward, and no independent organisation has implemented a host yet.

Using them together

An OpenWOP step could call an n8n workflow through its webhook trigger, and an n8n HTTP node could start an OpenWOP run; both also support MCP. Nothing has been built yet.

Common questions

Is OpenWOP an n8n alternative?

Not for most n8n users. n8n is a product for building automations visually; OpenWOP is a protocol for developers who build or call workflow hosts.

Is n8n open source?

n8n describes itself as fair-code under the Sustainable Use License, not open source. OpenWOP's code is Apache 2.0 and its spec is CC BY 4.0.

Sources