- A.I.M. Mutual Insurance Companies
- AIG
- American Modern Insurance Group
- Bunker Hill Insurance
- Chubb
- CNA
- Farmers Insurance
- Fireman's Fund
- FirstComp
- Foremost
- GNY
- Great American
- Hanover
- Hartford
- Liberty Mutual
- MAPFRE
- Merchants Insurance Group
- MiddleOak
- Narragansett Bay
- National Grange Mutual
- Nationwide
- Peerless
- Philadelphia
- Plymouth Rock Assurance
- Preferred Mutual
- ProMutual Grp.
- QBE
- Quincy Mutual Group
- Safeco
- Safety Ins.
- Savers P&C
- Star Ins.
- Tower Grp.
- Travelers
- Zurich