Here’s a short list of serial terminal programs I currently use or I’ve used over the recent years:
RealTerm – my current favorite terminal program. Lots of features, including choice of binary display options: ASCII-only, Hex-only, ASCII + Hex. Send string shortcuts and so on.
TeraTerm – my previous favorite terminal program. There’s a new version, so I’m planning on trying out it for a while and see if its improved enough to replace realterm.
putty – a pretty standard serial terminal program that also includes SSH and Telnet clients.
muliterminal – as it names suggests you can setup many different terminals. I used it a lot on a recent multi-serial project where I could set up a configuration for each serial device in the project and save them. It save me time in only having to set up all the serial devices once so it proved its worth.
termite – is a very simple terminal program that just gets the job done