FTPMounterLite 1.3.3 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is Langui.net. The program lies within Internet & Network Tools, more precisely Download Managers. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
FTP Mounter Lite lets you mount FTP and SFTP servers as local drives. It helps you mount FTP/SFTP servers and open/edit/manage the remote files/directories directly. You can navigate/browse the directories in Finder. However, FTP Mounter Lite supports one FTP/SFTP drive at a time.
You may want to check out more Mac applications, such as PatchBurn, Anomos or FileShuttle, which might be related to FTPMounterLite.