n8n

n8n is a fair-code workflow automation platform from n8n GmbH (Berlin) that puts technical teams in full control of data privacy and costs at scale. It holds 182,000+ GitHub stars as the top self-hosted automation tool, with source code publicly available under the Sustainable Use License (note: not OSI-certified open-source; commercial SaaS resale requires a paid licence). The Community Edition itself is free to self-host and the broader codebase remains publicly developed in the open-source style.

What n8n does:

• •Visual drag-drop builder connect 400+ apps like OpenAI, Anthropic, Pinecone, and major CRMs to automate workflows without code.
• •AI Agent nodes create ReAct-loop agents that reason, act, and integrate with LangChain or vector databases like Qdrant.
• •Code nodes inject custom JavaScript or Python logic directly into any workflow step when no-code falls short.
• •MCP nodes deploy community MCP Server Trigger and Client Tool nodes for AI tool calling across your stack.
• •AI Workflow Builder turn natural language prompts into full workflows instantly without learning the node graph manually.
• •9,000+ community templates start from prebuilt workflows for sales, IT ops, and data pipelines instead of building from scratch.
• •Custom nodes plus REST API and CLI extend n8n with custom integrations, run it programmatically via the REST API, and operate it from the command line with npx n8n.
• •Self-host on Docker for Linux, Windows, or macOS run unlimited executions on your own server with no per-task fees.

Pricing:

• •Community Edition $0/mo, self-hosted, unlimited executions under the Sustainable Use License (free for internal and non-commercial use).
• •Starter $20/mo (billed annually), 2,500 cloud executions, 5 concurrent workflows, 1 project.
• •Pro $50/mo (billed annually), custom execution limits, 20 concurrent workflows, 3 projects.
• •Business $800/mo, 40K executions, SSO, SAML, LDAP, Git versioning.
• •Enterprise custom pricing/yr with dedicated support, advanced security, and tailored SLAs.

Limitations:

• •Cloud Starter execution limit is deceptive 2,500 executions/mo on the $20/mo Starter plan goes fast: a single 5-minute polling workflow consumes around 8,640 executions per month on its own, blowing past the limit before you even build a second automation.
• •Real technical knowledge barrier despite the low-code marketing, building reliable n8n workflows requires understanding webhooks, JSON, API auth, and error handling. Non-technical operators typically need 2-4 weeks of ramp-up before they ship production automations on their own.
• •Far fewer integrations than Zapier n8n has roughly 400 native integrations vs Zapier's 7,000+, so niche SaaS apps may have no connector and require custom HTTP Request work.
• •Complex workflows are slow workflows with 20+ nodes take 5-15 seconds per execution, making n8n unsuitable for real-time use cases. Datasets above ~100,000 rows degrade further.
• •Self-hosting has hidden ongoing costs the "free" self-hosted option still requires a VPS, version updates, monitoring, and backups, so the true cost is not zero unless your time is unbilled.