Google Scribe provides text completion service. Using information from what you have already typed in a document, Google Scribe provides related word or phrase completion suggestions. In addition to saving keystrokes, Google Scribe’s suggestions indicate correct or popular phrases to use.
How to use Google Scribe to Autocompelete Text, anywhere
From the Google Scribe page, drag the Google Scribe Bookmarklet (located below the text box) to Bookmarks toolbar (or Favorites). Later on, to use Google Scribe on a web page, click on the Google Scribe Bookmarklet. Google Scribe will then enable itself on the active text field on the webpage. Enabled text fields display the icon at top end corner.
As you type, Scribe will display a drop-down list of suggestions, just like Google’s search box does. You can press enter to apply the first suggestion or 1-0 to pick any option in the list (or use your mouse if you prefer). Google Scribe also offers sorting options and you can set it to ‘always on’ or ‘on demand’ mode.
Its an awesome tool for people who are slow in typing, however, it can be helpful for expert typists as well.
Try this tool in Gmail, docs, Twitter, facebook, works everywhere.