Maintainer

n.

1.

One who maintains.

Noun

1.

maintainer - someone who upholds or maintains; "firm upholders of tradition"; "they are sustainers of the idea of democracy" Synonyms: sustainer, upholder

(software)

maintainer - The person responsible for coordinating changes to a package of software and arranging the distribution of updates. The term usually applies only to free software where the maintainer (often the author) is doing it as a free public service.

admirer, booster, champion, friend, hold, keep, maintain, protagonist, supporter, sustainer, upholder