eSpeak - eSpeak is a compact open source software speech synthesizer for English and other languages, for...
RHVoice - RHVoice is a free and open source speech synthesizer.
IcanRead - Listen to any text. On paper or on a screen. POINT and LISTEN. A text-to-speech app with the most natural voices available. Mobile and desktop.
NaturalReader - Main Feature: Full Common Functions: Read Text Files o Text files o MS Word files
Sygic FleetWork - Manage your entire mobile workforce
kurzweil 3000 - Can read PDFs by highlighting the sentence and the word that is currently being read.