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  1. Magnifying Readers For Visually Impaired
  2. Computer Software For Visually Impaired

It is not difficult for a sighted person to imagine how being blind or visually impaired could make using a computer difficult. Just close your eyes and you will instantly experience that even processing text is impossible – or impossible without additional software at least. Now a range of software is available that can help to make using a computer an easier, more enjoyable and more productive experience for blind or visually impaired users.

For in-depth insights on accessibility, we recommend the online course on Accessibility at the Interaction Design Foundation.

Essential Software: A Screen Reader

Adobe® Acrobat® Reader® DC is free software you can use to read and access the information contained within PDF files. Adobe Acrobat Reader DC contains many capabilities specifically designed to make it easier for people with disabilities to read PDF files, regardless of whether the files have been optimized for accessibility. The Book Port Plus, the BookSense and the Victor Reader Stream will all play Audible books. There are several services that specialize in making books available to those who are blind or visually impaired outside of the Braille and Talking Book library system.

A screen reader is an essential piece of software for a blind or visually impaired person. Simply put, a screen reader transmits whatever text is displayed on the computer screen into a form that a visually impaired user can process (usually tactile, auditory or a combination of both). While the most basic screen readers will not help blind users navigate a computer, those with additional features can give people with visual impairment much more independence.

Whilst most screen readers work by having a synthetic voice that reads text aloud, others can also communicate data via a refreshable braille display. Such screen readers make use of crystals that can expand when exposed to particular voltage levels (thanks to a phenomenon known as the Piezo Effect), allowing visually impaired users to use their fingers to read the text that is displayed on screen. But while screen-reading software can be affordable, such hardware is usually very expensive.

Free Software Makes ‘Universal’ Access a Reality

Many people could not afford the expensive price tag associated with some of the more sophisticated screen readers. Luckily for them, there are several screen reading software that are completely free. The following is a list of free screen readers that one can download:

  1. NVDA (Windows)


    NVDA has been designed by a blind software engineering graduate, James Teh, for use with Windows computers. This free and open source screen reader has a synthetic voice that reads whatever the cursor hovers over, and can be used directly from a USB stick, making it ideal for students.

  2. Serotek System Access (Windows)


    This downloadable and complete screen reader can be used even outside your browser, thus making it one of the quickest ways of getting a screen reader up and running on your system. Serotek offers extended versions for a fee, although it is much cheaper than other screen readers.

  3. Apple VoiceOver (OS X)


    Apple VoiceOver includes options to magnify, keyboard control and verbal descriptions in English to describe what is happening on screen. It also reads aloud file content as well as web pages, E-mail messages and word processing files whilst providing a relatively accurate narrative of the user’s workspace. This covers a wide array of keyboard commands that enable user navigation of the Mac OS X interface.

  4. ORCA (Linux)


    ORCA is a Linux based screen reader which has also been evolving for the past number of years. Although it is not the sole Linux-based screen reader, ORCA is definitely the most popular. Recently it has been included with the Ubuntu installation CD, and with a couple of initial key presses it allows blind people to have audible interaction during the installation process.

  5. BRLTTY (Linux)


    BRLTTY is a background process (daemon) which provides access to the Linux/Unix console (when in text mode) for a blind person using a refreshable braille display. It drives the braille display, and provides complete screen review functionality. Some speech capability has also been incorporated.

  6. Emacspeak (Linux)


    Emacspeak is a free speech interface and that allows visually impaired users to interact independently and efficiently with the computer. Its technology enables it to produce rich aural representation of electronic information. Emacspeak offers audible interface of the different aspects of the Internet such as browsing and messaging as well as local and remote information via a consistent and well-integrated user interface.

  7. WebAnywhere (All OSs, Web browsers)


    WebAnywhere is a web-based screen reader for the web. It requires no special software to be installed on the client machine and, therefore, enables blind people to access the web from any computer they happen to have access to that has a sound card

  8. Spoken Web (Internet Explorer)


    Spoken-Web is a Web portal, managing a wide range of online data-intensive content like news updates, weather, travel and business articles for computer users who are blind or visually impaired. The site provides a simple, easy-to-use interface for navigating between the different sections and articles. Using the keyboard to navigate, a person who is blind or who has a visual impairment can hear the full range of an article content provided in a logical, clear, and understandable manner.

  9. ChromeVox (Google Chrome)


    Google ChromeVox is a Google Chrome screen reader extension for visually impaired users.

  10. ChromeVis (Google Chrome)


    Google ChromeVis is a Google Chrome extension that magnifies any selected text on a webpage. The magnified text is displayed inside of a separate lens and preserves the original page layout. Users can change both the lens text color and the lens background color.

Software for Work and Play

Such software is essential for blind users to read the content of web pages or communicate with friends and colleagues. As more sophisticated software has been made available to a larger audience, people have begun turning their attention to developing leisure programs that are designed with accessibility in mind. For example, the website blindsoftware.com has an accessible mp3 player to download and a selection of games.

Developing Software for Everyone

When it comes to universal access, several people with hearing or visual impairments or illnesses have found that it can become a barrier to using traditional software. The goal is to remove those perceived barriers and help them be able to achieve results beyond their imagination. This is why it is important that developers continue to work on making software as accessible as they can for a wide range of people, so everyone can benefit from the powerful tools computers offer.

Want to learn more?

If you’d like to brush up on Accessibility and get practical skills on the subject, then consider to take the online course on Accessibility. If, on the other hand, you want to go over the basics of UX and Usability, you could take the online course on User Experience. Good luck on your learning journey!

(Lead image: Depositphotos)

Screen readers are a form of assistive technology.

Current screen readers[edit]

Screen readerCreatorSupported platformsLicenseNotes
BRLTTYThe BRLTTY Team*nix, Windows console, DOS, AndroidFree and open source (GPL2)Available to download; part of most Linux distributions
ChromeVoxGoogleChrome OS or, with a speech processor, Linux, Mac, WindowsFreeChromeVox is a screen reader for Chrome and Chrome OS.
COBRABAUM RetecWindowsCommercialSupports Microsoft Active Accessibility (MSAA) and the Java Access Bridge.
EdbrowseKarl Dahlke*nix consoleFree and open sourceMakes a complete audio desktop, including web access with JavaScript support.
EmacspeakT. V. RamanEmacs (on *nix)Free and open sourceTurns Emacs into a 'complete audio desktop'.
iZoomIssistWindowsCommercialScreen magnifier with low-vision speech capabilities. Includes support for Mozilla Firefox.
JAWSFreedom ScientificWindows and DOSCommercial for Windows; freeware for DOSIncludes support for MSAA, the Java Access Bridge, and PDF.
LingspeakLingitWindowsCommercialA visual screen reader, which highlights the object and text being read. Supports MSAA, Java Access Bridge (OpenOffice), per line reading from Win32 classes 'Edit'(Notepad) and 'RichEdit'(Wordpad), MS Word. UIA and IAccessible2 is being worked on. One-month trial version available.
MAGicFreedom ScientificWindowsCommercialSpeech magnifier with low-vision speech capabilities. It can be used together with JAWS.
MetalmouthEvaluera Ltd.All that run Chrome browserFree and open source (Apache 2.0)metalmouth is a simplified open source screen-reader application which can be used to read out any HTML5 web pages and interact with most HTML5 input controls. It also supports multi-tab navigation.
Microsoft NarratorMicrosoftWindowsCommercialBundled with recent versions of Windows, this basic screen reader makes use of MSAA.
MicrosurfMicrosurfAll that run Chrome browserFreeMicrosurf is a screen reader for Chrome
NonVisual Desktop Access (NVDA)NonVisual Desktop Access projectWindowsFree and open source (GPL2)Programmed and scriptable in Python. Supports Mozilla Firefox, Microsoft Internet Explorer, Word, Excel and Outlook Express, and Mozilla Thunderbird. Supports web content using JavaScript. Supports Java Access Bridge. IAccessible2 is supported.
OrcaGNOME*nixFree and open source ( LGPL 2.1)The development of Orca was started by Sun Microsystems as part of the GNOME project with contributions from many community members, but since Oracle acquired Sun Microsystems in 2010, Orca turned into a completely community-driven project. It supports AT-SPI, so it works with the GNOME desktop, Mozilla Firefox/Thunderbird, OpenOffice/LibreOffice and GTK+, KDE/Qt and Java Swing/SWT applications. Though it is developed by the GNOME project, it is the most popular screen reader for Unix like systems with graphical environments other than GNOME, like KDE or Unity.
PC-TalkerKochi System DevelopmentWindowsCommercialJapanese screen reader. Supports MSAA and Flash[1]
PCVozEzHermaticWindowsCommercialAvailable to buy or download trial. Supports MSAA.
ScreenReader (formerly Supernova)Dolphin Computer AccessWindowsCommercialIncludes a screen magnifier and output to Braille devices. 30 day Free Trial available for download. Supports MSAA, the Java Access Bridge, and PDF.
Simply TalkerEcoNet InternationalWindowsCommercialTrial download available.
SpeakEasy Media SystemNDUWindowsCommercialSpecialized suite of vocalized programs designed for ease of use
SUSE-BlinuxNovellLinuxFree and open source
System AccessSerotekWindowsCommercialTrial download available. Supports Microsoft Internet Explorer (including DHTML/Ajax and Flash), Outlook Express, Outlook, Word, Excel, PowerPoint, Skype, and Adobe Reader. No support for Java yet.
TalkBack[2]GoogleAndroid 1.6+Open SourceUse with SoundBack and kickback
TalkButton[3]Upward Spiral SoftwareMacCommercialTalkButton works together with Microsoft Word to create an extensive text-to-speech environment. Features include highlighting of spoken text and keyboard echo. Trial version available.
Text to Speech[4]SpeakComputers.comWindowsFreeware
  • A free program that converts written text into spoken words or even written text into MP3 files.
  • Seven programs: Text to speech: Reader, Web browser, Mini Clipboard reader, Image Presentation, Appointment Reminder, Speaking Clock, Parental Controls
Thunder ScreenReaderSensory SoftwareWindowsFreewareLast update 2015[5]. Supports MSAA.
Virtual VisionMicroPowerWindowsCommercialBrazilian screen reader. Supports MSAA.
VoiceOverApple Inc.Mac OS X, iPhone, iPad, iPods, and Apple TVFree, CommercialFree and included with any Apple product. No installation or setup required. Available in over 30 language voices, which are also included for free. See Apple Accessibility [6] for more information.
WebAnywhereUniversity of WashingtonWebFree and Open Source (new BSD)Doesn't require any software installation to run so can be used at any public terminal that has sound available - works on any platform.
WinZoomClarityWindowsCommercialScreen reader with magnifier. USB version does not require any installation and can be used on any public computer.
Screen Access for AllNational Association for the Blind, New DelhiWindowsOpen sourceLast update: 2004
ZoomTextAi SquaredWindowsCommercialIncludes a screen magnifier. Trial download available.
Screen readerCreatorSupported platformsLicenseNotes

Unfinished Screenreader Projects[edit]

Screen readerCreatorSupported platformsLicenseNotes
ScreenfulScreenful TeamWindowsOpen sourceConcept is done. Due to problems finding skilled developers, the project is idling
The Longhorn Screen Reader ProjectOSSRP TeamWindows VistaOpen sourceConcept ideas have been made. Latest news said that the project had not succeeded. Whether or not they will continue or let it die is not known at the moment.
Apple Pie ProjectSimnix SoftwareWindows Phone 7 & 8Open source https://web.archive.org/web/20100109011430/http://applepie.codeplex.com/To help blind and partially sighted people to use a Windows Phone.

Magnifying Readers For Visually Impaired

Discontinued and/or obsoleted screen readers[edit]

Screen readerCreatorSupported platformsLicenseNotes
95ReaderSSCTWindowsCommercialJapanese screen reader; latest version (ver. 6.0, release date unknown) has specific support for Internet Explorer 6 and Macromedia Flash 6 [7], so seems obsolete and its availability seems unlikel
ASAP (Automatic Screen Access Program)[8]MicroTalkDosCommercial
ASAW (Automatic Screen Access for Windows)[9]MicroTalkWindowsCommercial
BlindowsBAUM Retec (formerly Audiodata)WindowsCommercialSubstituted by COBRA
DRACULA familyEurobrailleWindowsCommercial
Enable Reader Professional Speech SystemEnable Talking SoftwareDOSUncertain
Enhanced PC Talking ProgramComputer ConversationsDOSUncertain
Fire VoxCharles L. ChenAll that ran Firefox browser up to version 3.6Free and open sourceFor browsing with Firefox only (plugin), is not compatible with Firefox 3.6 or newer, that made it obsolete long ago
GnopernicusGNOME*nixFree and open source (LGPL 2)It was developed by BAUM Engineering, a partner company of Baum Retec AG. Used to be bundled with GNOME, but it was replaced by Orca in GNOME 2.16. Included a screen magnifier. It supported AT-SPI.
HALDolphin Computer AccessWindows, DOSCommercialWindows version was superseded by Supernova (later renamed to ScreenReader)
HT ReaderHT VisualWindowsCommercialIncluded support for MSAA and PDF. Disappeared from the price list of HT Visual [10], absolutely no other sign of it being available
Leitor de TelasMC / CPqDWindowsFreeBrazilian Portuguese screen reader. MSAA support. Latest info about it is from December 2007 [11]
Linux Screen Reader (LSR)GNOME*nixFree and open source (New BSD License)It was an alternative screen reader to Orca led by IBM started in 2006. However, it was ceased in 2007 when IBM focused their resources in other projects.[12] It supported AT-SPI.
LookOUTChoice TechnologyWindowsCommercialWas also available integrated with a screen magnifier. Last mention of it is from 2003. [13]
Mobile SpeakCode FactorySymbian OS, Windows MobileCommercialFull-fledged screen readers and Braille interfaces that let you access your mobile phone. One-month trial version available. The discontinuation of Simbian in 2013 and of Windows Mobile in 2010 made it obsolete.
Model T ReaderDolphin Computer AccessDOSFreeware
Pocket HalDolphin Computer AccessWindows Mobile PDA and PDA PhonesCommercial
PROVOXKansys, Inc.DOSUncertain
Screen ReaderResearch Centre for the Education of the Visually Handicapped (RCEVH)BBC Micro and NEC portable
Screen Reader/2IBMOS/2Commercial
Smart HalDolphin Computer AccessWindows Mobile and WM SmartphoneCommercial
Soft VertTeleSensory SystemsDOSCommercial
Talks & Zooms [14]Nuance CommunicationsSymbian OS Series 60 3rd and 5th Ed and Simbian^3CommercialPresentation and free Trial Version to be found on the site. The discontinuation of Simbian OS in 2013 made this obsolete.
TeleTenderTeleTender.orgAll Platforms: Windows, Linux, Mac OS X, iPhone, iPad, iPods, Windows, Android etc.FreeTeleTender is a voice communication platform for sight impaired people, embedded with a cloud based screen reader. Users can interact with any web pages on the internet by issuing voice commands over the phone. To use it, just dial one of its access numbers.
TinytalkOMS DevelopmentDOS and perhaps WindowsShareware
VirgoBAUM Retec AGWindowsCommercialSubstituted by COBRA.
Window BridgeSyntha-voice Computers (now out of business)WindowsCommercial
Window-EyesGW Micro (merged with AI Squared in 2014, [15] acquired by VFO Group, later Vispero, in 2016[16])WindowsCommercialAs of 2017, no longer available for sale.
WinVisionArtic TechnologiesWindowsCommercialNot officially discontinued, but there has been no further release since 1997.
Screen readerCreatorSupported platformsLicenseNotes

Software aids for people with reading difficulties[edit]

  • Automatik Text Reader from Davide Baldini (Firefox extension)
  • BrowseAloud from Texthelp Systems Inc
  • Capture Assistant from Renovation Software
  • ClaroRead from Claro Software
  • Claro ScreenRuler Suite from Claro Software
  • ClickHear[17] from gh LLC
  • ClickHear Mobile[18] from gh LLC
  • ClipSpeak[19] (last update: 2009) from Daniel Innala Ahlmark
  • EasyTutor from Dolphin Computer Access
  • EnVision: basic multi-featured Windows accessibility tool
  • Kurzweil 1000 (for the visually impaired) and Kurzweil 3000-firefly (for those with reading or writing difficulty) from Kurzweil Educational Systems
  • Penfriend from Penfriend Ltd
  • Proloquo from AssistiveWare
  • ReadHear[20] from gh LLC
  • ReadSpeaker from ReadSpeaker Holding B.V.
  • Read & Write from TextHelp Systems
  • ReadPlease from ReadPlease Corporation [21]
  • Read:OutLoud from Don Johnston, Inc.
  • Screen Reader from SourceBinary.com (no longer available, latest trial version can be obtained from other download sites)
  • SodelsCot[22] from Sodels Factory
  • TextAloud from NextUp.com
  • Ultra Hal TTS Reader from Zabaware, Inc.
  • VoiceText from Neospeech, Inc.
  • yRead from Spacejock Software

References[edit]

  1. ^Bob Regan, Best Practices for Accessible Flash Design (PDF)Archived 2007-03-23 at the Wayback Machine
  2. ^TalkBack: An Open Source Screenreader For Android
  3. ^Talkbutton.net
  4. ^Speakcomputers.com
  5. ^https://www.webbie.org.uk/blog/end-of-the-thunder-screenreader/
  6. ^Apple Accessibility
  7. ^95Reader ver 6.0 product information page (in Japanese)
  8. ^Wael Zakareya
  9. ^Kenneth Frasse, GUI Access: A Comparison of Screen-Readers (Part I), Access Review (Summer 1997)
  10. ^HT Visual price list (in Czech)
  11. ^Leitor de telas has become freely downloadable from the homepage of the Ministry for Communication of Brasil (in Portuguese)
  12. ^'Status of IBM a11y'. Retrieved 17 August 2013.
  13. ^Lookout screen reader information page
  14. ^Talks & Zooms product homepage
  15. ^'Ai Squared And GW Micro Merge Forces'. Retrieved Apr 16, 2019.
  16. ^'Breaking: VFO Group, owners of Freedom Scientific and Optelec, Acquires AI Squared'. Retrieved Apr 16, 2019.
  17. ^ClickHear
  18. ^ClickHear Mobile
  19. ^Clipspeak.codeplex.com
  20. ^ReadHear
  21. ^Ross, Ian (1 May 2004). 'Software developer builds on artificial intelligence'. Northern Ontario Business. Archived from the original on 13 October 2018. Retrieved 13 October 2018 – via Highbeam.Cite uses deprecated parameter dead-url= (help)
  22. ^Sodels.com

Computer Software For Visually Impaired

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