Current version: 1.0
Freeware
Requires System 6.0.1
Twilight II, the cool screen saver from DigiSoft Innovations, has a configurable option that lets you specify whether or not system beeps should unblank the screen.
Unfortunately, when Apple released System 6.0.1, they updated the SysBeep2 Toolbox call, which is used to play system beep sounds, so that it always sends an unblank command. This removes the ability to make the choice for yourself.
The Patch SysBeep2 utility patches the SysBeep2 call to stop making this decision for you, letting you configure it once again using Twilight II.