The Henley Passport Index was just published, an annual ranking of the world’s most strong passports based on how many countries the holder can enter without a visa.

Source and Methodology:

Countries Mentioned in the List:

Japan, Singapore,Germany, South Korea ,Finland, Italy, Luxembourg, Spain, Austria, Denmark, France, Ireland , Netherlands, Portugal, Sweden,
Belgium, New Zealand, Norway, Switzerland, United Kingdom, United States, Australia, Czech Republic, Greece, Malta, Canada, Hungary

source