From securityonline.info
Zelos (Zeropoint Emulated Lightweight Operating System) is a python-based binary emulation platform. One use of Zelos is to quickly assess the dynamic behavior of binaries via command-line or python scripts. All syscalls are emulated to isolate the target binary. Linux x86_64 (32- and 64-bit), ARM, and MIPS binaries are supported. Unicorn provides CPU emulation.