Git is foundational because it's a bunch of tools dealing with a very general data structure (the DAG of file versions, or whatever the semantically correct thi

Git is foundational because it's a bunch of tools dealing with a very general data structure (the DAG of file versions, or whatever the semantically correct thing to say is). Docker is something similarly powerful. It wraps around a few things (bunch of kernel namespaces, kinda reproducible, layered image format) and it is useful in many use-cases beyond microservices. There are few other tools which I can say the same about. `jq` and curl are powerful and ubiquitous. But jq is a language, and curl is a tool for interacting with so many protocols. I don't know if I can put them in the same ballpark as git and docker.