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Историческую версию FTP Link Downloader можно получить на Android
Простой загрузчик для фтпа и FTPS ссылки
Adds support for downloading files served via FTP servers. Includes plain FTP and FTPS (aka FTP-ES or FTP-SSL) support as well as username/password authentication.
NOTE: This is purposely NOT a full-fledged FTP client, but merely a way to download files via FTP, a feature that Android (and common browsers) do not support out-of-the-box.