A personal tool, not a public service.
fnltochka files lets its owner, Sergey Emelyanov (fnltochka), reach the files in his own Google Drive accounts from his own computers: list folders, search, read documents and download files. It signs in only its owner's Google accounts.
Личный инструмент владельца для доступа к его собственному Google Диску. Не публичный сервис.