Bochs (box) is a portable IA-32 and x86-64 IBM PC compatible emulator and debugger mostly written in C++ and distributed as free software under the GNU Lesser General Public License. Developed by http://bochs.sourceforge.net/
License: Open Source
Bochs is an open-source IA-32 emulator that provides full system emulation, making it ideal for educational purposes and debugging. In contrast, KVM is a high-performance virtualization solution that leverages hardware virtualization features, making it suitable for production environments and scenarios requiring efficient resource utilization.