Google has recently made some accessibility enhancements to Google Calendar, Google Docs and Google Sites. Improvements have been made in keyboard shortcuts and support forscreen readers among other items.

Google Calendar: Google Calendar now has new keyboard shortcuts and better screen reader support for our blind users. Members of the blind community can now use JAWS,VoiceOver and ChromeVox to manage your calendars, create and edit events or simply browse your events.

Google Docs and Google Sites: New keyboard shortcuts and better screen reader support with support for two screen readers: JAWS and ChromeVox.

For more information:
Google Calendar: http://gmailblog.blogspot.com/2011/09/improved-accessibility-for-google.html
Google Docs and Sites: http://googledocs.blogspot.com/2011/09/improved-accessibility-in-google-docs.html
Accessibility: http://www.google.com/accessibility/