n8n is an open-source workflow automation tool that allows you to automate tasks across different applications and services. It provides a visual interface that allows you to create workflows by connecting different nodes to perform specific tasks. n8n is built on top of Node-RED, a popular open-source programming tool for wiring together hardware devices, APIs, and online services. It is designed to be easy to use and suitable for a wide range of use cases, including integration with CRM systems, data analysis, and automation of social media tasks.