Bitvise (formerly known as Tunnelier) is an SSH and SFTP client for Windows that stands out mainly for the huge variety of options it has and, of course, for having a graphical interface that allows us an exhaustive control over all these options.
The program supports RSA, DSA or SSPI authentication, the bvterm, xterm, and vt100 protocols, has a wide range of flexibility thanks to its command terminal, and allows to establish FTP-SFTP bridge connections.
In the tabs of its interface we can adjust the necessary parameters to establish the compression and encryption system of the data transferred through the secure connection, as well as manage user profiles to be able to work in the most automated way possible.
Bitvise is free for non-commercial use, and you can use it on up to 4 computers. In case of greater use, you should contact the author of the program to acquire the license.