There is a professional version for a fee, WordWeb (http://wordweb.info/free) can be downloaded for free. The software embeds a dictionary / synonym library on your computer with 5000 words of pronunciation. NaturalReader (www.naturalreaders.com) available on both Windows and Mac computers is text-to-speech software that can be used with natural sound. Speak the sound of the highlighted text. This free reading program allows students to listen to text that may be higher than their reading level. You can activate the floating NaturalReader toolbar at any time by placing it on the desktop. NaturalReader reads written text such as Web pages, PDF files, word processing documents, e-mails, etc.
WordWeb's one-click English vocabulary and Windows dictionary can find words in almost every program. Works offline, but you can also find words by web browsing such as Wikipedia Encyclopedia. The free version features include definitions and synonyms, proper nouns, a basic word of 150 thousand words and a synonym set of 120 thousand words. 50 Useful Open Source Resources for Writers and Writing Professionals If you are a lighting expert, you can have a wonderful free open that you can help you write, edit and organize your work Let's get the resources of the source. This is a list of 50 open source tools you can use to make your sentences better.
Starting with Microsoft Word, all free tools can help you better write. The one I like most over the years is WordWeb (which helps you to find alternatives to simpler words), Google search (double quotes when wondering phrases or words "" ) Grammatically slow (Fix spelling and prevent using many other web mistakes)