n8n

n8n is a workflow automation platform built for technical teams that refuse to choose between flexibility and speed. Unlike purely no-code tools, it lets you write JavaScript or Python directly in your workflows, while still benefiting from an intuitive visual interface for simpler steps.

Use cases span a wide range: IT Ops for automated onboarding, SecOps for security ticket enrichment, DevOps for converting natural language into API calls, and sales teams for generating customer insights from reviews.

What sets n8n apart is its approach to debugging and testing: rerun a single step without replaying the entire workflow, replay mock data without waiting on external systems, and test your AI workflows with real data before going live.

Available as self-hosted via Docker or as a managed cloud version, with full source code access. For enterprises, the platform offers SAML SSO, RBAC, secret encryption, audit logs, Git-based version control, and AI governance with human-in-the-loop approval. With 183,000+ GitHub stars and a community of over 200,000 members, it's one of the most active open-source projects in the automation ecosystem.