1. ABBYY Development Inc.
2. Accusoft Corporation
3. Adobe Inc.
4. airSlate Inc.
5. Apowersoft Ltd. by ?Wangxu Technology Co. Ltd.
6. Avanquest Software
7. Classic PDF Editor
8. DocsCorp LLC
9. Foxit Software Inc.
10. Icecream Apps
11. iSkysoft
12. JotForm Inc.
13. Lumin PDF
14. MobiSystems Inc.
15. Movavi Software Limited
16. Nitro Software Inc.
17. PDF Buddy
18. PDF Complete Inc.
19. PDF Technologies Inc.
20. pdfFiller
21. pdfrun.com
22. Qoppa Software
LLC
23. Red Software
24. Sejda BV
25. Smallpdf AG
26. Tracker Software Products Ltd.
27. Tungsten Automation Corporation
28. Wondershare Technology Co. Ltd.