Narrator has been acquired by Mariner Software, Inc. Read about the acquisition on the Dejal blog.

During the transition period, it is still available to buy and you can get support from Dejal. Once it is moved to the Mariner site, licensed users will be able to upgrade to the Mariner-branded edition of Narrator for free.
Narrator icon Narrator
Read out stories in multiple voices

Mac OS X includes several voices built-in, but they are somewhat limited, and only US English. If you'd like more voice talent, including different accents and languages, you can download and try the high quality voices provided by Cepstral LLC.

Try them here! Type some text (or use the default), and click Play to listen to the selected voice (it may take a few moments to be received by your computer):

 
Voice
 
 
Rate
 
 
Pitch
 
 
Effect
 
 
 
 

(If for some reason it doesn't work, try Cepstral's demo page instead.)

If you like what you hear, click the Download Now button to get any number of voices from Cepstral's downloads page, or click Buy Now to purchase voices from their store.