GXemul is a framework for full-system computer architecture emulation. Several processor architectures and machine types have been implemented. It is working well enough to allow unmodified "guest" operating systems to run inside the emulator, as if they were running on real hardware. The emulator emulates (networks of) real machines. The machines may consist of ARM, MIPS, Motorola 88K, PowerPC, and SuperH processors, and various surrounding hardware components such as framebuffers, busses, interrupt controllers, ethernet controllers, disk controllers, and serial port controllers. GXemul, including the dynamic translation system, is implemented in portable C++, which means that the emulator will (at least in theory) run on practically any modern host architecture and unix-like operating system, for which a C++ compiler is available. The documentation lists the machines and specific guest operating systems that can be regarded as "working" in GXemul. The guest operating system that works best in GXemul is NetBSD/pmax.