From these slides it seems it started as a qemu fork: https://www.blackhat.com/docs/us-15/materials/us-15-Nguyen-Unicorn-Next-Generation-CPU-Emulator-Framework.

From these slides it seems it started as a qemu fork: https://www.blackhat.com/docs/us-15/materials/us-15-Nguyen-Unicorn-Next-Generation-CPU-Emulator-Framework.pdf https://www.blackhat.com/docs/us-15/materials/us-15-Nguyen-U... would like to know more about unicorn as well.