Is there a tool like WinSCP for MacOS?

Cyberduck supports SFTP and used to support SCP when this answer was written.

I just used Fugu to copy files from ssh server to a samba share, and it works great.

Fugu can also be installed using brew cask install fugu from Homebrew Cask (not the one from Homebrew itself).

And for me the SSH connection is easier to setup in Fugu compared to cyberduck.

I know this question is old. WinSCP 5+ works well in Mac OS X 10.11 (El Capitan) - MacOS 10.14 (Mojave) with Wine 3+.

A word to the wise on using either Cyberduck or Firefox to transfer files. If you copy a file and OS X complains about it being damaged, it is likely that the quarantine extended attribute has been set. To remove it from a file: xattr -dr com.apple.quarantine fileinquestion