Highlight each word as it is read aloud

This feature involves a text-to-speech engine that reads the text on a web page aloud. This may be implemented in a number of different ways – as a built-in text-to-speech reader in the operating system, as downloadable screen reader software that operates on the user’s machine, or as a remote text-to-speech service that receives text online and returns a spoken copy as an audio file.

The way that text is read may vary depending on the implementation and the user group. This approach adds to other text-to-speech features by highlighting text as it is read aloud.

This listing includes a wide range of products, from screen readers, to simple text-to-speech utilities, to large literacy suites that include a text-to-speech application. Please note that these products are not necessarily endorsed by RtF, but represent the range of available options.

Many operating systems, including Windows Vista and Mac OS X, include limited built-in screen reading ability as well.

Open Source and free

These products are free and their source code may be modified with few restrictions.

• AccessiBar Extension – Mozdev, Edan Kemelman
• ATalker – ATutor, ATRC at University of Toronto
• ATbar – ATbar, University of Southampton
• Audio Enriched Links – UNC, Peter Parente
• CliCk, Speak – CLC (Charles Chen)
• EmacSpeak – TV Raman
• FireVox – CLC (Charles Chen)
• MozBraille – Cedrik Chek, Mozdev
• NVDA – NVDA Project
• Orca – (open source), Sun
• Power Reader – Project: Possibility
• PowerTalk – FullMeasure
• RoboBraille – RoboBraille Consortium
• Screader
• Speegle – (open source)
• WebAnywhere – U. of Washington, Jeff Bigham

Free, not necessarily open source

These products are free to use, but may have strict restrictions on viewing and modifying source code.

• System Access To Go – Serotek
• Thunder – Screenreader.net
• WebVisum – WebVisium
• BrookesTalk – Oxford Brookes University, SPEECH Project
• EchoSpeech – EchoSpeech
• EdWord – DeafBlind Online
• GhostReader – Origin Instruments
• MathPlayer – Design Science
• Natural Reader Text-to-Speech – Natural Soft
• SimplyWeb2000 – EconoNet International
• Speakonia – CFS Technologies
• UltraHal – Zabaware
• Web Adaptation Technology – IBM
• WordTalk – Call Centre
• Vu-Bar – FX Software

Commercial, with free trial

These products are free to try for a limited period of time or with limited functionality. They must be purchased for full functionality.

• JAWS – Freedom Scientific
• Virgo, Cobra – Baum
• 2nd Speech Center – 2nd Speech Center
• Ace Buddy – Zero2000
• Aurora Suite – Aurora Systems
• ClaroRead – Claro Software
• CoolSpeech – ByteCool
• Easy Web Browsing – IBM
• Guide – Software Express
• Hal – Dolphin
• Kurzweil 3000 – Kurzweil Educational Systems
• Literacy Productivity Pack – Premier Literacy
• OpenBook – Freedom Scientific
• Scan & Read Pro – Premier Literacy
• TextAloud – Nextup.com
• VisioVoice, iVox – AssistiveWare
• WordQ – Quillsoft, Bloorview Kids Rehab
• WriteOnline – CrickSoft
• WYNN – Freedom Scientific
• ZoomText Magnifier/Reader – AI Squared
• QualiWorld Suite – QualiLife
• Read & Write Gold – Texthelp

Commercial, no free trial

These products must be purchased to be used, and did not offer free trials at the time of posting.

• Adept1 – Amazability
• J-Say – Tandt Consulting
• Mobile Speak – Code Factory
• System Access – Serotek
• Windows Eyes – GW Micro
• Aspire Reader – CAST, Aquus Tech
• iCommunicator – PPR
• J-Say – Tandt Consulting
• ReadOn – Sensory Software
• Solo Literacy Suite – Don Johnston
• Talking Desktop – Talking Desktop
• WebAdapt2Me – IBM
• Aspire Reader – CAST, Aquus Tech

• WebAnywhere: a screen reader on-the-go – University of Washington – Bigham, J.P. and Prince, C.M. (2007)
• Towards one world web with HearSay3 – University of Washington – Borodin, Y., Bigham, J.P., Stent, A., and Ramakrishnan, I.V. (2008)

• A flexible VXML interpreter for non-visual web access – University of Washington – Borodin, Y. (2006)
• AxsJAX: a talking translation bot using google IM: bringing web-2.0 applications to life – Chen, C.L. and raman, T.V. (2008)
• Csurf: a context-driven non-visual web-browser – University of Washington – Mahmud, J.U., Borodin, Y., and Ramakrishnan, I.V. (2007)
• VoxBoox:: a system for automatic generation of interactive talking books – University of Texas, Dallas – Jain, A. and Gupta, G. (2006)
• Ongoing investigation of the ways in which some of the problems encountered by some dyslexics can be alleviated using computer techniques – University of Dundee – DIckinson, A., Gregor, P., and Newell, A.F. (2002)
• Dyslexia, eLearning and eSkills, (Pgs 84-90) ‘Supporting Dyslexic Adults in Higher Education’ – University of Southampton – Draffan, E.A. (2012)
• Southampton Accessibility Tools presented at 8th International Cross-Disciplinary Conference on Web Accessibility – University of Southampton – Wald, M., Draffan, E.A., Skuse, S., Newman, R. and Phethean, C. (2011)