Installing Google Web Apps in the latest Google Chrome dev channel builds. (Google Operating System blog)

If you use Google
Chrome Dev Channel or a recent Chromium build, you can install 3 Google
apps: Gmail, Google Calendar and Google Docs.

“An installed web app could
be separated visually from other tabs, could integrate better with the OS, and
could be granted increased permissions. Installing a web app in Google Chrome is
easy and quick, with no restart required. At its simplest, installing a web app
is like creating a super-bookmark to it,” explains
Google.

The the entire post at http://googlesystem.blogspot.com/2010/07/install-google-web-apps-in-google.html for detailed instructions how to enbale these tabs. Interesting!