This is truly a giant. P&G belongs to the elite of companies all over the world, and has a high ranking on the famous Fortune 500 list. There are very few people in the world, who are not familiar with at least one of P&G's brands – and most of us probably know many of them. Among their brands you can find Gillette, Duracell, Ariel, Pampers, Oral-B, Wella and many more.