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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:
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.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.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.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.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.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.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 cardSpoken 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.ChromeVox (Google Chrome)
Google ChromeVox is a Google Chrome screen reader extension for visually impaired users.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 reader | Creator | Supported platforms | License | Notes |
---|---|---|---|---|
BRLTTY | The BRLTTY Team | *nix, Windows console, DOS, Android | Free and open source (GPL2) | Available to download; part of most Linux distributions |
ChromeVox | Chrome OS or, with a speech processor, Linux, Mac, Windows | Free | ChromeVox is a screen reader for Chrome and Chrome OS. | |
COBRA | BAUM Retec | Windows | Commercial | Supports Microsoft Active Accessibility (MSAA) and the Java Access Bridge. |
Edbrowse | Karl Dahlke | *nix console | Free and open source | Makes a complete audio desktop, including web access with JavaScript support. |
Emacspeak | T. V. Raman | Emacs (on *nix) | Free and open source | Turns Emacs into a 'complete audio desktop'. |
iZoom | Issist | Windows | Commercial | Screen magnifier with low-vision speech capabilities. Includes support for Mozilla Firefox. |
JAWS | Freedom Scientific | Windows and DOS | Commercial for Windows; freeware for DOS | Includes support for MSAA, the Java Access Bridge, and PDF. |
Lingspeak | Lingit | Windows | Commercial | A 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. |
MAGic | Freedom Scientific | Windows | Commercial | Speech magnifier with low-vision speech capabilities. It can be used together with JAWS. |
Metalmouth | Evaluera Ltd. | All that run Chrome browser | Free 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 Narrator | Microsoft | Windows | Commercial | Bundled with recent versions of Windows, this basic screen reader makes use of MSAA. |
Microsurf | Microsurf | All that run Chrome browser | Free | Microsurf is a screen reader for Chrome |
NonVisual Desktop Access (NVDA) | NonVisual Desktop Access project | Windows | Free 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. |
Orca | GNOME | *nix | Free 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-Talker | Kochi System Development | Windows | Commercial | Japanese screen reader. Supports MSAA and Flash[1] |
PCVoz | EzHermatic | Windows | Commercial | Available to buy or download trial. Supports MSAA. |
ScreenReader (formerly Supernova) | Dolphin Computer Access | Windows | Commercial | Includes a screen magnifier and output to Braille devices. 30 day Free Trial available for download. Supports MSAA, the Java Access Bridge, and PDF. |
Simply Talker | EcoNet International | Windows | Commercial | Trial download available. |
SpeakEasy Media System | NDU | Windows | Commercial | Specialized suite of vocalized programs designed for ease of use |
SUSE-Blinux | Novell | Linux | Free and open source | |
System Access | Serotek | Windows | Commercial | Trial 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] | Android 1.6+ | Open Source | Use with SoundBack and kickback | |
TalkButton[3] | Upward Spiral Software | Mac | Commercial | TalkButton 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.com | Windows | Freeware |
|
Thunder ScreenReader | Sensory Software | Windows | Freeware | Last update 2015[5]. Supports MSAA. |
Virtual Vision | MicroPower | Windows | Commercial | Brazilian screen reader. Supports MSAA. |
VoiceOver | Apple Inc. | Mac OS X, iPhone, iPad, iPods, and Apple TV | Free, Commercial | Free 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. |
WebAnywhere | University of Washington | Web | Free 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. |
WinZoom | Clarity | Windows | Commercial | Screen reader with magnifier. USB version does not require any installation and can be used on any public computer. |
Screen Access for All | National Association for the Blind, New Delhi | Windows | Open source | Last update: 2004 |
ZoomText | Ai Squared | Windows | Commercial | Includes a screen magnifier. Trial download available. |
Screen reader | Creator | Supported platforms | License | Notes |
Unfinished Screenreader Projects[edit]
Screen reader | Creator | Supported platforms | License | Notes |
---|---|---|---|---|
Screenful | Screenful Team | Windows | Open source | Concept is done. Due to problems finding skilled developers, the project is idling |
The Longhorn Screen Reader Project | OSSRP Team | Windows Vista | Open source | Concept 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 Project | Simnix Software | Windows Phone 7 & 8 | Open 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 reader | Creator | Supported platforms | License | Notes |
---|---|---|---|---|
95Reader | SSCT | Windows | Commercial | Japanese 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] | MicroTalk | Dos | Commercial | |
ASAW (Automatic Screen Access for Windows)[9] | MicroTalk | Windows | Commercial | |
Blindows | BAUM Retec (formerly Audiodata) | Windows | Commercial | Substituted by COBRA |
DRACULA family | Eurobraille | Windows | Commercial | |
Enable Reader Professional Speech System | Enable Talking Software | DOS | Uncertain | |
Enhanced PC Talking Program | Computer Conversations | DOS | Uncertain | |
Fire Vox | Charles L. Chen | All that ran Firefox browser up to version 3.6 | Free and open source | For browsing with Firefox only (plugin), is not compatible with Firefox 3.6 or newer, that made it obsolete long ago |
Gnopernicus | GNOME | *nix | Free 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. |
HAL | Dolphin Computer Access | Windows, DOS | Commercial | Windows version was superseded by Supernova (later renamed to ScreenReader) |
HT Reader | HT Visual | Windows | Commercial | Included support for MSAA and PDF. Disappeared from the price list of HT Visual [10], absolutely no other sign of it being available |
Leitor de Telas | MC / CPqD | Windows | Free | Brazilian Portuguese screen reader. MSAA support. Latest info about it is from December 2007 [11] |
Linux Screen Reader (LSR) | GNOME | *nix | Free 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. |
LookOUT | Choice Technology | Windows | Commercial | Was also available integrated with a screen magnifier. Last mention of it is from 2003. [13] |
Mobile Speak | Code Factory | Symbian OS, Windows Mobile | Commercial | Full-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 Reader | Dolphin Computer Access | DOS | Freeware | |
Pocket Hal | Dolphin Computer Access | Windows Mobile PDA and PDA Phones | Commercial | |
PROVOX | Kansys, Inc. | DOS | Uncertain | |
Screen Reader | Research Centre for the Education of the Visually Handicapped (RCEVH) | BBC Micro and NEC portable | ||
Screen Reader/2 | IBM | OS/2 | Commercial | |
Smart Hal | Dolphin Computer Access | Windows Mobile and WM Smartphone | Commercial | |
Soft Vert | TeleSensory Systems | DOS | Commercial | |
Talks & Zooms [14] | Nuance Communications | Symbian OS Series 60 3rd and 5th Ed and Simbian^3 | Commercial | Presentation and free Trial Version to be found on the site. The discontinuation of Simbian OS in 2013 made this obsolete. |
TeleTender | TeleTender.org | All Platforms: Windows, Linux, Mac OS X, iPhone, iPad, iPods, Windows, Android etc. | Free | TeleTender 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. |
Tinytalk | OMS Development | DOS and perhaps Windows | Shareware | |
Virgo | BAUM Retec AG | Windows | Commercial | Substituted by COBRA. |
Window Bridge | Syntha-voice Computers (now out of business) | Windows | Commercial | |
Window-Eyes | GW Micro (merged with AI Squared in 2014, [15] acquired by VFO Group, later Vispero, in 2016[16]) | Windows | Commercial | As of 2017, no longer available for sale. |
WinVision | Artic Technologies | Windows | Commercial | Not officially discontinued, but there has been no further release since 1997. |
Screen reader | Creator | Supported platforms | License | Notes |
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]
- ^Bob Regan, Best Practices for Accessible Flash Design (PDF)Archived 2007-03-23 at the Wayback Machine
- ^TalkBack: An Open Source Screenreader For Android
- ^Talkbutton.net
- ^Speakcomputers.com
- ^https://www.webbie.org.uk/blog/end-of-the-thunder-screenreader/
- ^Apple Accessibility
- ^95Reader ver 6.0 product information page (in Japanese)
- ^Wael Zakareya
- ^Kenneth Frasse, GUI Access: A Comparison of Screen-Readers (Part I), Access Review (Summer 1997)
- ^HT Visual price list (in Czech)
- ^Leitor de telas has become freely downloadable from the homepage of the Ministry for Communication of Brasil (in Portuguese)
- ^'Status of IBM a11y'. Retrieved 17 August 2013.
- ^Lookout screen reader information page
- ^Talks & Zooms product homepage
- ^'Ai Squared And GW Micro Merge Forces'. Retrieved Apr 16, 2019.
- ^'Breaking: VFO Group, owners of Freedom Scientific and Optelec, Acquires AI Squared'. Retrieved Apr 16, 2019.
- ^ClickHear
- ^ClickHear Mobile
- ^Clipspeak.codeplex.com
- ^ReadHear
- ^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) - ^Sodels.com