I don't have anything of note publicly out there, if I did and it was still a going concern despite having had no updates for quite some time (so “fished and stable” rather than “dead and not to be relied upon unless you want to maintain it yourself”), I'd chuck a commit in every now and then (annually? every six months?) if only to update the readme.md to say that as of <current date> I didn't consider the project any less supported than it was at the point of the previous update.