Last but not least is one of our favorites, although they shut down earlier in 2018. AMIDuOS comes in two Android flavors: Jelly Bean or Lollipop. One is $10 after a free trial, while the newer Lollipop costs $15 after your trial.
If you paid for this service, you can still download it by clicking here. Unfortunately, a lot of emulators aren't needed anymore, and developers stopped supporting them.
AMIDuOS was great for basic app testing, some advanced stuff, productivity use, office programs and it even works pretty good when it comes to gaming. You can try it out on Windows 7, 8, or 10, and they have tons of help videos so you can get started with ease. That includes many Windows tablets too, so you can easily switch between Windows or Android on the fly, even when you're working mobile. This isn't dual-boot, but you can easily switch between the two.
If you're looking for an AMI DuOS alternative try ARC Welder or GenyMotion.