NVDA - NonVisual Desktop Access helps blind people to operate Computer

It is a screen reading software developed by http://www.nvda-project.org/

Major highlights include:
  • Support for popular applications including web browsers, email clients, internet chat programs and office suites
  • Built in speech synthesizer supporting over 20 languages
  • announcement of textual formatting where available such as font name and size, style and spelling errors
  • Automatic announcement of text under the mouse and optional audible indication of the mouse position
  • Support for many refreshable braille displays
  • Ability to run entirely from a USB stick or other portable media without the need for installation
  • Easy to use talking installer
  • Translated into many languages
  • Support for modern Windows Operating Systems including both 32 and 64 bit variants
  • Ability to run on Windows logon and other secure screens
  • Support for common accessibility interfaces such as Microsoft Active Accessibility, Java Access Bridge, IAccessible2 and UI Automation
  • support for Windows Command Prompt and console applications