Matplotlib for Sourceforge [news]
Matplotlib is a great python toolkit for plotting data
#!/usr/bin/env python (...)
FTDI are manufacture's of USB UART chips. The FT245 is a very nice and simple chip to use, from a hardware point of view and a software point of view.
From the hardware side of things the FT245 provides a nice simple 8bit bus for bi-direction data. It also provides four control pins (two to indicate the state of READ/WRITE on the FTDI (...)