n8n

n8n is a fair-code, open-source workflow automation platform purpose-built for technical teams who need both visual orchestration and full code flexibility. Developers can build workflows using a node-based canvas while dropping into JavaScript or Python at any node — no artificial ceiling on what logic can be expressed. Native AI agent support and MCP (Model Context Protocol) integration make it a strong fit for LLM-powered automation pipelines. n8n is self-hostable via Docker, supports air-gapped and on-prem deployments, and ships enterprise-grade security primitives including SSO/SAML, LDAP, RBAC, and secret stores. The platform exposes an API for programmatic workflow management and integrates with observability tooling (Datadog log streaming, OpenTelemetry, LangSmith). With 500+ integrations and 206,836 GitHub stars, it has a large, active open-source community. Pricing starts at €20/mo (Starter, 2,500 executions/mo); a free Community Edition is available via self-hosting.