@cubot - tried Arc Welder but it says it requires Chrome OS (which I do not have).

@mbaluta - thanks for the recommendation. I tend to prefer VMs over emulators due to past experience and trying to replicate as closely as possible what a user using the actual device would see. Won't rule it out though. Great tip about Opera 12.16. I've installed it and already noted one thing I need to fix on our site!

thanks miyukiwork,

Is there a version that does? Maybe an older one? We'd really like to test our website on Opera Mini, and a virtual machine is currently our only option.

I just downloaded this version on a fresh install of Android 6.0 Marshmallow tablet (running in Virtualbox). Opera Mini won't even load, it just says "To run Opera Mini you need more space. Try removing some apps or clearing app data." Again this is a fresh install with only one other app I got from the store.

The device has 2.0 GB of RAM ( 1.1 GB used) and 1.11 GB free of hard drive space.

I searched everywhere and can't find the hardware requirements, but surely it has enough resources to run?