- A. Central Insurance Company
- Adirondack Insurance Exchange
- AIG
- Allegany Co-op Insurance Company
- Andover Companies
- Atlantic Mutual Insurance Company
- Central Insurance
- Chubb
- CNA
- Crum & Forster
- Dryden Mutual Insurance
- Erie & Niagara Insurance Association
- Fireman's Fund
- Foremost
- Hanover
- Hartford
- Kemper
- Livingston Mut.
- MAPFRE
- Merchants Insurance Group
- Mercury
- MetLife
- MiddleOak
- National General
- National Grange Mutual
- Nationwide
- NYCM
- OneBeacon
- Peerless
- Philadelphia
- Preferred Mutual
- Progressive
- Safeco
- Selective
- Sterling
- Tower Grp.
- Travelers
- Trident
- United Frontier Mut.
- Utica National Insurance Group
- Zurich