NVDA was developped to help people who are blind or have visual impairments access and use Windows OS. To do this, NVDA can use a speech synthesizer or a refreshable Braille display. This software works is several languages, but it is up to the user to find the appropriate voice to make it work.
Supported Language(s): English, and over 43 more languagesDownload Size (Mb): 50
System Requirements: Windows XP and later, 50 MB of free disk space
Price: Free
Website: http://www.nvaccess.org/about/nvda-features/
Developer: NV Access
Download: http://www.nvaccess.org/download/