n8n is a source-available workflow automation tool with a visual node editor, 400+ integrations and native AI/LLM nodes. Its appeal is that you can wire together apps, APIs and AI agents without much code, then self-host the whole thing instead of paying per task like Zapier or Make.
The trade-offs are its license and pricing: n8n is fair-code (source-available, not OSI open source), its cloud plans meter executions, and some capabilities sit behind an enterprise tier. That's why teams increasingly look to genuinely open-source alternatives they can self-host and fully own.
▶ See what n8n does ↗The closest open-source swap for n8n. Activepieces is a truly MIT-licensed, no-code automation builder with 280+ pieces, a visual flow editor and first-class AI and MCP support — so you can wire agents and tools together without the fair-code strings. Self-host with Docker or use their cloud, and write custom pieces in TypeScript when you outgrow the library.
If you'd rather write code than drag nodes, Windmill is the pick. It turns TypeScript, Python, Go or Bash scripts into shareable workflows, cron jobs and internal UIs, backed by a fast Rust execution engine. It still has a visual flow builder, but the code-first model and self-hostable design make it a developer's answer to n8n.
The closest thing to a self-hosted Zapier. Automatisch keeps things deliberately simple — connect apps with triggers and actions in a clean no-code UI, with your data staying on your own servers for GDPR-friendly automation. Fewer integrations than n8n, but far easier to reason about for straightforward app-to-app workflows.
The original flow-based programming tool, and still the most battle-tested. Node-RED wires together devices, APIs and services on a visual canvas, with thousands of community nodes and a huge following in IoT and home automation. If your automations lean toward events, hardware and low-level protocols rather than SaaS apps, it's the mature, Apache-licensed choice.
When automation turns into serious data orchestration, Kestra scales where n8n strains. You declare workflows in YAML, trigger them on events or schedules, and run any language in between — with a clean UI for topology, logs and replays. It's the pick for data-heavy pipelines and teams that want workflows in version control.
For developers who want automation as code in their own repo, Trigger.dev writes background jobs and long-running workflows in plain TypeScript — with retries, queues, scheduling and no timeouts baked in. There's no visual editor; instead you get version-controlled, testable workflows that deploy alongside your app. A modern, self-hostable take on n8n for engineering teams.
The veteran self-hosted automation platform. Huginn builds "agents" that watch the web, scrape sites, track events and act on them — a private, hackable alternative to IFTTT and Zapier that predates most of this list. Setup is heavier and the UI is dated, but for monitoring, alerting and web-scraping automations it's still hard to beat on flexibility.
If the reason you reached for n8n is AI, Flowise is the specialist. It's a visual builder for LLM apps and agents — chains, RAG pipelines, tools and multi-agent flows — dragged together on a canvas and exposed as an API or chat widget. Narrower than n8n on general SaaS automation, but the best open-source pick when your workflows are really about models.
Hands-on testing of the core n8n workflows: triggers, integrations, branching logic, AI nodes and self-hosting.
Commit velocity, release cadence and community health over the trailing 6 months — not just star counts.
How much of your n8n setup survives: integrations available, self-host effort, license terms and data export.
Popular proprietary tools people compare with n8n — not open-source, but worth a look.
For most people, Activepieces is the best overall — it's the closest no-code match to n8n, but MIT-licensed with 280+ integrations and native AI/MCP support, and it's easy to self-host. Windmill is best if you prefer writing code, Automatisch is the simplest Zapier-style option, and Node-RED is the pick for events and IoT.
Not in the OSI sense. n8n uses a "fair-code" sustainable-use license, which makes the source available but restricts commercial resale and some hosting. Alternatives like Activepieces (MIT), Node-RED, Kestra, Trigger.dev and Flowise (Apache-2.0) use genuinely permissive open-source licenses.
Activepieces, Windmill, Automatisch, Node-RED, Kestra, Trigger.dev, Huginn and Flowise are all free and open source, and you can self-host every one at no cost. The right choice depends on whether you want no-code building (Activepieces, Automatisch), code-first workflows (Windmill, Trigger.dev), data orchestration (Kestra) or AI flows (Flowise).
Windmill and Trigger.dev are the most developer-friendly — both turn code (TypeScript, Python, Go) into version-controlled, testable workflows rather than visual nodes. Kestra is best if you want declarative YAML pipelines for data orchestration.
Yes — Activepieces, Windmill, Automatisch, Node-RED, Kestra, Trigger.dev, Huginn and Flowise can all be self-hosted (usually with Docker), so your workflows and data live entirely on infrastructure you control.
Notion is an all-in-one workspace that combines notes, docs, wikis, databases and lightweight project management in one flexible, block-based tool.
Claude Code is a terminal-based AI coding assistant built on Anthropic's Claude models.
Lovable is an AI app builder: you describe the product you want in chat, and it generates a working full-stack web app — typically React with Tailwind on the front end and Supabase for auth and data — that you can iterate on with follow-up prompts, then deploy and share from the same browser tab.
