FTP Clients

Transmit
Panic Inc.(Trial version)
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Transmit FTP is a modern FTP application that supports a range of transfer types and services. Not only does it support FTP and SFTP, but it also allows you to transfer files to and from services like
Commander One
Eltima Software(Free)
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Commander One: A Powerful Dual-Pane File Manager for Mac
Flow
Extendmac(Trial version)
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Flow: An FTP client built specifically for Leopard
AbleFtp
Hitek Software(Trial version)
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Automate your FTP transferring tasks
FileZilla
Filezilla(Free)
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FileZilla: FTP made easy
CuteFTP
Globalscape(Trial version)
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CuteFtp for Mac OS X
WebDrive
Southrivertech(Trial version)
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Mount an FTP server as a local device
Yummy FTP
Yummy Software(Trial version)
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Can I Download a File Transfer Protocol Software For Mac OS X?
Fetch
Fetchsoftworks(Trial version)
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Complete and intuitive FTP client
FTPortal
Limit-point(Trial version)
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FTPortal: Simplify the way you upload files