Google Desktop goes Linux

Google Desktop allows people to search the Web while also searching the full text of all the information on their computer, including Gmail and their Web search history. Because the index is stored locally on the computer, users can access Gmail and Web history while offline.
Google Desktop for Linux was written natively and uses Google's own desktop search algorithms, not existing
Although Google has released other projects as open-source software, where it can be freely modified and redistributed by anyone, Google Desktop for Linux is proprietary. The software was developed by Google's Beijing engineering team and is available in English, French, Italian, German, Spanish, Dutch, Chinese, Japanese, Korean and Portuguese.
Google also offers Linux versions of its Picasa photo-editing software, as well as Google Earth and Google Toolbar for Firefox.