Tera Term (rarely TeraTerm) is an open-source, free, software implemented, terminal emulator (communications) program. It emulates different types of computer terminals, from DEC VT100 to DEC VT382. It supports telnet, SSH 1 & 2 and serial port connections. It also has a built-in macro scripting language and a few other useful plugins.
ability to automatically creates logs with unique log names
ssh, standard telnet and serial port support
supports dec/digital/vt terminal standards
del function for dec vt (backspace/delete) needs setting up (not default)
if all you need is a vt emulation then this is far superior to the paid versions, and the automatic default logging is a clear bonus, but the file name setting can take a little getting used to. blows putty out of the water!