When comparing SmartFTP vs SPFileZilla, the Slant community recommends SmartFTP for most people. In the question“What are the best FTP clients for Windows?” SmartFTP is ranked 9th while SPFileZilla is ranked 10th. The most important reason people chose SmartFTP is:
Can set different SSH Key for each connection, whereas in CuteFTP it's set for the whole application.
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Pros
Pro SSH Key Setting
Can set different SSH Key for each connection, whereas in CuteFTP it's set for the whole application.
Pro Visual compare
SmartFTP is capable of comparing two folders and display visually the differences between them.
Pro Has an integrated editor
SmartFTP has a capable integrated text editor with support for syntax highlighting, folding, auto-complete, brace and indent highlighting, utf-8 characters, etc.
Pro Interface similar to windows explorer
Pro Built-in tty
SmartFTP includes a terminal emulator.
Pro Portable
No installation required, click and run !
Pro Open Source
There is no limitation to use it
Cons
Con Certain functionality is behind a paywall
Con Outdated
Last development is 2017