In Debian, maintainers are people who work on uploaded packages. There are:

Debian Developers

Debian Project members who have gone through the Debian New Maintainers process and had their application accepted are called Debian Developers

Debian Maintainers (DM)

Debian Maintainer is an official status of people, who are allowed to upload specific packages (with a DM field set). They don't need to request for sponsorship.

Sponsored maintainers

You can be a sponsored maintainer. You only need a sponsor.


Here is a list of expressions which use the word "maintainer":

Debian New Maintainer

The Debian New Maintainers process, is the process of becoming an official Debian Developer (DD).

Debian New Maintainers' Guide

The Debian New Maintainers' Guide is the first document to read if you want to work with packages