Or it is feature complete and doesn't need constant updates?
As long as it is being used daily, I think a project is still alive.
It might have all the features it needs, but I have yet to see any non-trivial project that doesn't have bugs, or need occasional updates due to changes in something it interacts with.
It might have all the features it needs, but I have yet to see any non-trivial project that doesn't have bugs, or need occasional updates due to changes in something it interacts with.