Sval is a Web service which charts the closing price of a stock listed on the American Bourses versus the closing values of the DJIA, NASDAQ, and S&P500 over a given period of time. The chart is returned to the user as a SOAP message attachment in PNG, JPEG, or SVG format. This project is a testbed for investigating a wide variety of Web service technologies by implementing the same Sval Web service using different architectures.
Libbraille makes it easy to access Braille displays and terminals. It can write text on a Braille display, directly draw Braille dots, or get the value of pressed keys. It is compatible with a wide range of Braille displays, and can autodetect some of them. A virtual GTK+ display is provided so that developers can test how their application would be rendered in Braille.