A woman named Anny is selling one of the most advanced one row cultivators I have ever seen. It has a chisel plow, and several other interchangeable implements.
When draft animals are not available, these type of devices could be pulled with a cable. Perhaps using a hand powered winch, or pedal power. Or any ATV, car, etc can provide the power, if cables and pulleys give it a place to drive.
I think it might be practical to build a simpler (though perhaps heavier) all in one cultivator using off the shelf parts. Such a device could be assembled on vacation and given to villagers in a poor country for beta testing. The material that enables strong machines to be built by a novice is telescoping steel tubing.