Overdose is a Yahoo! Chat Client for UNIX and Windows systems. Overdose uses a fast curses interface, which means it runs in a terminal/console. Overdose is fast, light, and portable. However, as of November 1, 2006, Overdose doesn't work because the legacy Chat2 protocol is no longer in service. I hope to implement a full YMSG protocol in the future, currently I have a incomplete version.