Leon

Leon is an MIT-licensed personal assistant designed to live on a server. It provides personal assistant functionality in a server-based environment, allowing you to host and use it on infrastructure you choose. Its core purpose is to give users direct control over where their personal assistant runs rather than requiring it to reside on infrastructure selected by someone else. Leon is intended for people who want to run a personal assistant directly from their own server and are comfortable choosing and maintaining that server environment. It can be considered an open source replacement for the paid product Zapier. However, Leon is described specifically as a self-hosted personal assistant, and the available information does not claim that it offers feature-for-feature compatibility with Zapier. Users looking for an exact substitute should therefore note that its stated focus is personal assistant functionality on a server they control.