n8n

n8n is a workflow automation platform built around a visual node editor: users connect nodes representing triggers, actions, and integrations to build automations, often with little or no code. It is widely used as a self-hostable alternative to cloud-only automation services because it can run on infrastructure the operator controls, giving full ownership of data and execution. The project advertises hundreds of integrations alongside native AI and LLM nodes for building agentic workflows.

Licensing

n8n is distributed under a fair-code model (the Sustainable Use License), which makes the source available and permits free self-hosting for internal business and personal use, while reserving certain commercial resale rights. This is distinct from a fully permissive open-source license such as MIT or Apache 2.0, a nuance worth understanding before deploying it in a commercial product. The Community Edition can be self-hosted at no software cost, with infrastructure being the main expense.

Relevance to sovereign AI

For those assembling private AI pipelines, n8n is often used to glue together LLM calls, vector stores, webhooks, and local services into a single self-hosted automation layer. Keeping that orchestration on owned hardware aligns with a sovereignty-first posture. n8n is one tool among several in this space; the best fit depends on the integrations and control a given workflow requires.

For LLM-specific builders, D-Central also describes Flowise, a visual tool focused on LLM apps, and the broader LangGraph framework.