Three different ways to show off your client list, depending on what you want to emphasize:
  1. Page of logos to show that they include the biggest names in the industry (here is how to design one)
  2. Map with dots to show that they are scattered around the globe
  3. Bar chart with sales number ranking to show how much you sold them (if you can share this information)
Mixing them up might not give the best picture: logos of completely unknown companies, a world map with lots of dots in New York City.