Anbox is described as 'Puts Android into a container and every Android application will be integrated with your operating system. Any Android version is suitable for this approach and try to keep up with the latest version from the Android Open Source Project' and is a popular android emulator in the network & admin category. There are more than 25 alternatives to Anbox for a variety of platforms, including Windows, Mac, Linux, Android and Android Tablet apps. The best Anbox alternative is QEMU, which is both free and Open Source. Other great apps like Anbox are BlueStacks, WayDroid, Android-x86 and KVM (Kernel-based Virtual Machine).
Oniro is an operating system for phones, an alternative to Android itself, based on OpenHarmony. It is not a way to run Android apps on other operating systems.