IMSpeak!
by East Bay Technologies Inc.

  IM Speak! is a tool that adds speech and personality to incoming messages from your favorite Instant Message program. By using the program, you can assign 'voices' to each one of your buddies allowing them to speak to you in any voice you choose along with many other features.

Main features: Compatible with MSN, AOL IM; assign voices to your buddies.
adjust speed or pitch of voice. Speaks text from Clipboard (or any copy command). Speaks text documents (files). Optional display will display text as it speaks to you. (Adjustable font/size for the vision impaired). Speech translation dictionaries allow you to have IM Speak! translate incoming text to different words. Speaks time, temperature and weather conditions in your area.

Related software:
chat, instant messenger, speech, text to speech, ...