- 21st Century
- AEIG
- American Commerce Insurance
- Andover Companies
- Applied Underwriters
- Chubb
- CNA
- Cumberland Mutual
- Encompass
- Farmers of Salem
- Foremost
- Franklin Mut.
- GNY
- Guard
- Hanover
- Harford Mut.
- Harleysville
- Hartford
- Imperium/Delos
- Liberty Mutual
- Magna Carta
- Merchants Insurance Group
- Mercury
- MetLife
- MiddleOak
- NJ Skylands
- NJM Group
- Norfolk & Dedham
- Ohio Casualty
- OneBeacon
- Peerless
- Penn Millers
- Penn Natl.
- Personal Service
- Plymouth Rock Assurance
- Preferred Mutual
- Progressive
- Safeco
- SAIF
- Selective
- Travelers
- United Fire Group
- Utica First
- Utica National Insurance Group
- Zurich