"Get early access to the latest features and improvements in Android Studio by downloading the Android Studio Preview.
The Android Studio Preview can run side-by-side with your stable version, so you can work on the same projects in both versions."
Google Wave is a new tool for communication and collaboration on the web, coming later this year. Watch the demo video below, sign up for updates and learn more about how to develop with Google Wave.
You can drag and drop images and SVGs into your browser to place them in your drawing. Then drag, resize and rotate. The time-machine feature provides unlimited undo/redo functionality. There's a huge collection of fonts, graciously provided by those involved with the Google Fonts Directory-the text tool allows you to preview exactly what your text looks like, instead of editing and clicking "apply" over and over. The select tool allows you to edit any layer, and even do bulk operations, such as changing the color of multiple layers.
In my opinion, Xenocode Browsers is the ultimat tool for checking your website in different browsers. Xenocode Browsers allow you to lauch IE6, IE7, IE8, Firefox 2, Firefox 3, Google Chrome and Opera directly from the web. The only weak point: The service isn't available for Macs and GNU/Linux powered PCs.