I like what the Mozilla Foundation developers are doing with the user interface for the upcoming Firefox version 3 web browser: matching the interface elements to the operating system:
While Firefox looks good now...
...sharing a general appearance with other applications in Windows or the Mac OS will make it a better experience, and I think it's a good investment of developer time.
Labels: apple, design, firefox, macosx, microsoft, software, web, windows, windowsvista, windowsxp