The 1.1 version of iSpeak for Mac was available as a free download on our website. ISpeak for Mac lies within System Tools, more precisely Dashboard Widgets. This free Mac app is a product of iSpeak.
From the developer:
iSpeak vocalizes text into speech using Mac OS X built-in speech technology. Simply drag and drop any text into the text box and press the speak button to hear the text being spoken.
You may want to check out more Mac applications, such as iSpeak Translator or Learn Spanish Levels I & II with Bueno, entonces., which might be similar to iSpeak.