1. Altair Engineering Inc.
2. Amazon.com Inc.
3. Andrews UK Limited
4. ANEGIS Group
5. Apple Inc.
6. Barnes & Noble Inc.
7. Blurb Inc. by RPI Print Inc.
8. BookBaby by DIY Media Group
9. Canva Inc.
10. ciando GmbH
11. Dassault Syst?mes SE
12. Designrr by PageOneTraffic Ltd.
13. Flipbuilder
14. HarperCollins Publishers LLC
15. IGI Global
16. John Wiley & Sons Inc.
17. Kensington Publishing Corp.
18. Kitaboo by Hurix Systems Pvt. Ltd.
19. Lulu Press Inc.
20. Macmillan Publishers Ltd
21. Marq
22. McGraw Hill
23. Rakuten Kobo Inc.
24. Scribd Inc.
25. Smashwords Inc by Draft2Digital
LLC
26. Visme