Markus B

This software offers a Windows Vista-like theme for Firefox, Thunderbird, and Sunbird, allowing users to customize their browser and email client to match the appearance of the popular operating system.

TrafficFox is a Firefox theme that uses road signs as its design. It provides a unique browsing experience with its appealing interface, making it easy to use while remaining visually striking.

This Firefox theme removes the Back and Forward buttons from the user interface.

HiDiMuIt is a cross-platform extension that hides disabled items in menus, making them clearer. With this add-on, you can customize your menus by hiding the ones that are disabled. It works on Mac OS X, Windows, and Linux.

"Customize Gulp21 theme interface with ease using the Firefox add-on. Modify interface elements using this simple tool" (24 words)

HiDiMuIt for Thunderbird simplifies menus by disabling unnecessary items for better user experience. It is a cross-platform tool compatible with Mac OS X, Windows, and Linux.