DTE is a project mainly written in C, it's free.
Dumb Terminal Emulator - Data Comm, COMP 3980
COMP 3980 Assignment 1
Author: Tom Nightingale A00757275
Source: http://github.com/thegreat/DTE
Description: This is a dumb terminal emulator written in C
using the Win32 API. It allows for sending and receiving
data (characters) over a serial port.
A user may connect to a specified port with
configured settings and begin to send and
receive characters.
The source code and versioning history can be found via
the above URL. Please take a look around, feel free to
relive the headaches I have endured this past week :P