All Freeware
Nexus Terminal is a fast, flexible, inexpensive telnet client application for connecting Windows PC users to IBM mainframe, AS/400, and LINUX/UNIX systems via TCP/IP. Support for SSH, SSL and FTPS/SFTP. Easy installation and setup.
ZOC is a well known telnet/SSH/SSH2 client and terminal emulator. It's functions (like typed command history, scrollback, multiple window support, etc.
z/Scope Warp is a GUI/HTML enabled terminal emulator. Runs as a stand-alone and web-browser enabled for accessing AS/400 iSeries and IBM Mainframes under Microsoft Windows platforms.