Japplis Speech is a free text to speech convertor that can speak out lines as you type them. This is a pretty useful tool when you are tryin to blog or while making a report.
This is an online speech convertor which works in Java, it takes about 2-3 minutes to load the voice. Once the voice has been loaded it can speak out text ask you type it. There are also options to make it read sentences one a line has been completed. This is useful when you are writing an article or a letter, it can help you correct those silly gramatical mistakes too.