1. 10 to 1 PR
2. 5W Public Relations LLC
3. Agility PR Solutions LLC
4. Burson Cohn & Wolfe
5. BuzzStream
6. Cision US Inc.
7. Communications Strategy Group
8. Daniel J. Edelman Holdings Inc.
9. Dentsu International
10. Firecracker PR
11. Fleishman-Hillard Inc.
12. Hill+Knowlton Strategies
13. Hypefactors
14. Idea Grove LLC
15. Interdependence
16. Ketchum Inc.
17. Meltwater
18. Muck Rack
LLC
19. Mynewsdesk AB
20. Omnicom Group Inc.
21. Presspage B.V.
22. PRLab
23. Prowly by A Semrush Company
24. Publicis Groupe
25. Roxhill Media Limited
26. Saints Art Private Limited
27. Weber Shandwick