On the outskirts of Niamey, the capital of Niger, it looks as if the countryside has moved to the city. Clusters of dome-like wooden huts have popped up. Cows and goats are tethered in the shade.

Finally, this list focuses on software for productivity; there are plenty of other places to find free PC games. Some tips: Always be on the lookout for bloatware installers. To make ends meet, some ...