Complex sentence: An open source kernel debugger similar to SoftICE named "Rasta Ring 0 Debugger" (RR0D) is available; it provides low level debugging for Microsoft Windows, Linux, OpenBSD, NetBSD, and FreeBSD.
Split into simpler sentences: An open source kernel debugger similar to SoftICE named "Rasta Ring 0 Debugger" (RR0D) is available. It provides low-level debugging for Microsoft Windows, Linux, OpenBSD, NetBSD, and FreeBSD.