Quartz Debug
From Mac Guides
Quartz Debug is part of Xcode Tools and allows the developer to monitor and test various Quartz and Quartz Extreme applications and performance issues.
A number of utilities are available, such as a screen screen refresh rate (with embeddeed CPU load meter), a list of system windows, and their current Quartz status, and the ability to adjust the "pixel size" of newly launched applications.
Adjusting the pixel size can lead to some interesting results, as newly launched applications will be scaled according to the current setting in the User Interface Resultion window.
[edit]
