Opera opens Widget SDK, DragonFly is Live

Opera has launched Widgets SDK beta that also features the much awaited FireFox’s FireBug counterpart – DragonFly

DragonFly, from the first look is quite appealing and is more detailed than FireBug.

Opera Widgets SDK beta include:

• Widget emulator
  Instantly experience how widgets should appear and function across TV, computer and mobile screens, for easier cross-device development.
• Libraries
  Save time by using libraries for animation and other characteristics that will add compelling functionality to your applications.

More on SDK and DragonFly

Quite lately, I am using Opera more than the bulky FF (yet to try FF3 RC1 which is supposedly sleek).

Which browser do you use?