There's the BioLite stoves: https://www.bioliteenergy.com/products/basecamp

They are high-efficiency, low-smoke wood stoves and the company actually tries to make a difference to people that rely on fire for cooking: https://www.bioliteenergy.com/pages/mission

I've had the camp stove for a couple of years and it works really well. I wouldn't recommend using it indoors (the monoxide risk if nothing else), but it definitely fits in with the off-grid movement.