PrimeOS - Android For Laptop/PCs based on the Android-x86 project.
Android-x86 - Run Android on your PC.
Phoenix OS - Installs android on computer. Based on android-x86
BlueStacks - BlueStacks is a website designed to format mobile apps to be compatible to desktop computers, opening up mobile gaming to laptops and other computers. Read more about BlueStacks.
FydeOS - A Chrome OS fork, with Android apps support, aimed at the Chinese market.
Bliss OS - Open Source OS for PC's, based on AOSP