Text-to-Speech
Text to speech can be a powerful tool for several reasons - It supports and provides access to struggling readers by reading digital text aloud allowing them to see and hear the information they are reading. It supports the writing process, especially for students to edit and revising work. It also can serve as a tool for communication and participation for student who may not be able to verbally
PowerTalk: PowerTalk is a free program that automatically reads aloud any Microsoft PowerPoint for Windows presentation or slideshow. After installing Power talk onto your PC open the program and choose the Power Point presentation you wish read. It will read aloud all text on your slides including any hidden text. Works in Windows 7, Vista and XP.
Natural Reader : A free text-to-speech software program which converts any written text to speech (Word, pdf, websites, emails)