Reposted with permission from blog.texthelp.com
Read&Write for Google™ is a Chrome extension that works on Macs, PCs and Chromebooks using the Google Chrome web browser. The extension can be downloaded for free on the Google Chrome web store and is packed with features ranging from text to speech to a picture dictionary, vocabulary tools and much more. The extension works with Google documents, PDFs, ePubs and Kurzweil 3000 files that are accessed within Google Drive.
All features in Read&Write for Google are available during the 30-day trial. After 30 days, the text to speech and translator tools for Google Docs will remain live for continued free access. The premium features for Google Docs, PDFs, ePubs, and Kes files will be available only with a paid Read&Write for Google subscription. A matrix of free vs. premium supports can be found here: http://rw.texthelp.com/drive/Support/premium.
The video below provides a brief overview of Read&Write for Google: