The Savitar session window. (Background colors, font colors and font face are all customizable.)

The world settings dialog lets you specify the background color, font color and font face, and determine if Savitar should interpret HTML or ANSI tags.

Savitar's world picker.

Customizable triggers allow you to match text sent from the world and trigger a custom response from the client (play a sound, alter the text color, send a reply, etc.)

You can create macro keys to send specific commands: