Text to Speech

Listening to what you wrote is a great method of improving your writing and catching mistakes that spelling and grammar checkers miss.  The [[http://extensions.libreoffice.org/extension-center/read-text|Read Text extension]] LibreOffice provides a Text-to-Speech feature.  Text-to-Speed feature is also available in MS Office, see http://office.microsoft.com/en-us/word-help/using-the-speak-text-to-speech-feature-HA102066711.aspx for setup information. Additionally there are a lot of online services that do text to speech.