Microsoft Windows Clients.

CoreFTP LE

Homepage http://www.coreftp.com
Tested Version 1.3c (build 1447.6)
Settings Notes Bring up the Site Manager dialog from the Tools menu. Select the "AUTH TLS" and "OpenSSL" options. Bring up the Advanced Site Settings dialog and select the Connections page. Deselect "Keep Alive". Bring up the Transfers page and select "Set default transfer mode to BINARY".

FlashFXP

Homepage http://www.inicom.net/pages/en.ffxp-home.php
Tested Version 3.4.0 (build 1145)
Usage Notes Bring up the Site Manager dialog. On the Options tab deselect "Send anti-idle keep alives", "Send noop during transfer" and "Show hidden files (LIST -al)". On the SSL tab, check the "Auth TLS" button.

Kermit 95

Homepage http://www.columbia.edu/kermit/k95.html
Tested Version 2.1.3
Usage Notes
set auth tls verify off
set ftp authtype tls
set ftp data-protection-level clear
ftp open mssftp.ucar.edu

SmartFTP

Homepage http://www.smartftp.com/download/
Tested Version 2.0.997
Settings Notes Bring up the Settings dialog from the Tools menu. Select the Connection "Keep Alive" subpage and deselect the "Enable Keep Alive" option. Select the Connection SSL subpage and set "AUTH Mode" to "TLS", "Control Connection Mode" to "Private (Secure)", "File Transfer" to "Clear" and "List Transfer" to "Clear". Select the Transfer ASCII/Binary page and set "Default Transfer Type" to "Binary Transfer Type".
Connection Properties Notes When you create a new "Remote Browser" for the MSS FTP Service, set "Protocol" to "FTP over SSL Explicit".