Apart from Qemu being one of the most powerful virtualization tools, used in a wide range of cloud computing providers, it can also be used to emulate a different architecture (e.g. you can run arm64 binaries/linux on your x86 machine).

Qemu supports various architectures like ARM, making it useful for Tizen developers. If you want to experiment with Tizen on ARM, you can do so now with or without any ARM hardware. First, install qemu-system-arm on your system (on Debian family: sudo apt-get install qemu-system-arm), then create or download an armv7l disk image (tizen-common-wayland-arm-sunxi-20140527rzr.raw will also work). Since we won't boot on the image, a kernel is needed; just rebuild it or download it from the link above (vexpress has the best support as far as I know)...

1. QEMU is good at device emulation and has various platforms which is perfect for development or testing on different platforms. 2. QEMU's documentation is quite helpful and it is easy to use with just few lines of command lines. 3. With KVM, QEMU is so efficient that you can even expect native experience from it. 4. As an open source software, its community is active and friendly. Thanks to engineers in QEMU community for introducing me to open source world.