Dagu

Dagu is an open source automation program that provides an alternative to Cron with a Web UI. It lets you define commands and the dependencies between them as a Directed Acyclic Graph (DAG), making the relationships among commands explicit. These dependencies are specified in a declarative YAML format, combining text-based command definitions with a Web UI rather than relying on Cron alone. Dagu is for people who automate commands and need a clear way to describe dependencies between them, especially those comfortable working with YAML. It can replace Zapier for automation tasks that fit this command-based DAG model. One important limitation is that Dagu’s documented approach is specifically centered on command dependencies defined in YAML; the available information does not establish that it supports the same range of automation use cases as Zapier.