No specific info about version 12.1. Please visit the main page of JaSFTP on Mac Informer.
Ultimate FTP + SFTP + WebDAV + Amazon S3 file transfer client on the Mac.
Your best friend for FTP file transfer on Mac OS X.
FTP + SFTP + FTPS file transfer client which focuses on speed...
A graphical user interface for MacOS’s built-in command-line SFTP application.
CuteFTP Mac Professional is the most advanced Mac FTP client available.