I have checked so many SFTP clients already, but one is worse than other. But seriously... I need exactly the following features:
Be easily usable using keyboard, and not only with mouse
Be the GUI working FAST, and do not freeze all the time
Support multithread connections so I could continue browsing the SFTP, while it's transfering files
Automaticly update directly edited files
Support segmented file transfer, so I could use my FULL network speed and not like 10% of it for transfering files (I have over 100Mbit download speed, so it's very boring, when I see 500KB/s or 2MB/s downloads instead if 10MB/s from high quality dedicated servers)
Support private key based SSH encryption
It should have a GUI interface of course, it doesn't need to be so super nice, just fast
So far what I found is the following:
FileZilla: Totally unusable without mouse
TotalCommander: It's fast, but it keeps randomly disconnecting, which is super bad
WinScp: It's GUI is very slow and often freezes and does slow file transfer, even if I use 9 threads
FTP Voyager: Totally unusable without mouse
CuteFTP: Totally unusable without mouse
CyberDuck: Randomly crashes
SmartFTP: Randomly crashes
BitKinex: This client was closest to my needs, however it failed to connect to some SFTPs, because of some Cipher issues :O I found this about these Ciphers, but after doing that BitKinex closes the connection to that SFTP server, so I have no idea about what to do...
I tried this solution for cipher issues: http://steronius.blogspot.sk/2014/10/ssh-no-matching-cipher-found.html
So seriously, is there any really perfectly working SFTP client for Windows? I am even able to buy it, if it's seriously good. Please suggest me a program, even a free or paid one, which is working properly.