Maintainer

Definitions

A person responsible for managing an open-source project — reviewing pull requests, triaging issues, making release decisions, and often doing it all for free while users file angry GitHub issues demanding instant fixes. Maintainer burnout is one of open source's biggest existential problems.
In plain English: The person who runs an open-source project — reviewing contributions, fixing bugs, and managing the community, often as unpaid volunteer work.

1970s: Unix culture establishes the role of 'maintainer' — the person who accepts patches and shepherds a package
2014: The Heartbleed bug reveals that OpenSSL, critical internet infrastructure, was maintained by essentially one underfunded person
2020s: Maintainer burnout becomes a recognized crisis; funding models like GitHub Sponsors and Tidelift attempt to address sustainability