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导航菜单

Screen Reader	Website	Free / Commercial
Non Visual Desktop Access (NVDA)	http://www.nvda-project.org/ (External website that opens in a new window)	Free
System Access To Go	http://www.satogo.com/ (External website that opens in a new window)	Free
Thunder	http://www.screenreader.net/index.php?pageid=11 (External website that opens in a new window)	Free
WebAnywhere	http://webanywhere.cs.washington.edu/wa.php (External website that opens in a new window)	Free
Hal	http://www.yourdolphin.co.uk/productdetail.asp?id=5 (External website that opens in a new window)	Commercial
JAWS	http://www.freedomscientific.com/jaws-hq.asp (External website that opens in a new window)	Commercial
Supernova	http://www.yourdolphin.co.uk/productdetail.asp?id=1 (External website that opens in a new window)	Commercial
Window-Eyes	http://www.gwmicro.com/Window-Eyes/ (External website that opens in a new window)	Commercial