Mailet is a simple-to-use OS X app that will let you access Gmail easily right from your Mac's menu bar. It features a clean and simple-to-work-with interface that will make it easy for you to focus on your work. It works on Mac Operating System X 10.6.6 or later.
Mia for Gmail (was Notifier Pro for Gmail) is a desktop Gmail client which sits politely in your menu bar.
