The Google Toolbar 3 beta is available with some nice new features, integrating the new Google Maps service and a spellchecker for web forms aswell as a "word translator" as a more advanced translation serivice implementation…

• SpellCheck: whenever users type into a web form (including web-based email, discussion forums, and intranet web applications), SpellCheck instantly reviews and suggests corrections. The AutoFix option enables users to automatically check and correct all the text they're entering with one click.
• AutoLink: Whenever users see a U.S. address on a web page, one click on AutoLink automatically links the address to an online map. For example, if users are reading a review of a new restaurant, clicking on AutoLink will turn its address into a link to a map, complete with directions. AutoLink also links package tracking numbers to pages displaying that package's delivery status and other useful information, such as Vehicle Identification Numbers (VIN) and Publication ISBN numbers.
• WordTranslator: This feature translates words from English web pages into one of 8 other languages. Hover the cursor over a word and Google Toolbar's WordTranslator feature displays the word in French, Italian, German, Spanish, Chinese (simplified and traditional), Japanese, or Korean.