Currently, it's in various developers' personal GitHub accounts. To make the code clearly modifiable by others, as well as to reduce bus factor, it's proposed that we move it into a centralized location.
== Tally ==
[ ] https://github.com/Niharika29/database-reports
[ ] https://github.com/MusikAnimal/SurveyCop
[ ] https://github.com/MaxSem/CommonsNotifier
[ ] Parts of MusikBot?
== Gerrit v.s GitHub ==
Pros of Gerrit:
* Has Phabricator integration
* Can use Wikimedia CI infrastructure
Cons of Gerrit:
* Not user friendly
* Harder to attract volunteer contributions
* More buggy (e.g. T197083)
Pros of GitHub:
* User friendly
* Travis can do more than Wikimedia CI
* Easier to receive volunteer contributions
Cons of GitHub:
* No Phabricator integration
* Proprietary platform, hosted outside WMF infrastructure