n8n

Teams often have data and tools spread across many apps, and wiring them together by hand is slow and fragile. n8n solves this as a workflow automation platform: you build multi-step workflows and AI agents on a visual canvas, and add JavaScript, Python or npm packages where you need custom logic. It connects to 1500+ integrations and offers 9,000+ workflow templates to start from. n8n supports AI workflows with models from OpenAI, Anthropic, Google and open-source providers, so you can switch providers without redesigning your automation. It includes human approval steps, role-based access and audit trails for teams that handle sensitive data. It is distributed under the fair-code Sustainable Use License, with the source code visible and the option to self-host or use n8n Cloud. It suits developers and automation teams who want to deploy it anywhere and extend it with their own nodes. License: fair-code (Sustainable Use License and n8n Enterprise License). Source: n8n-io/n8n, 207,525 stars. Open-source alternative to commercial iPaaS tools is not claimed here as the README does not state it. For a quick trial, install with Docker and open the editor locally.