These are the CAs installed by default in Firefox 2:
- ABA.ECOM, INC.
- AOL Time Warner Inc.
- AddTrust AB
- America Online Inc
- Baltimore
- Comodo CA Limited
- Digital Signature Trust Co.
- Entrust.net
- Equifax
- Equifax Secure
- Equifax Secure Inc.
- GTE Corporation
- GeoTrust Inc.
- Global Sign nv-sa
- IPS Internet publishing Services s.l.
- IPS Seguridad CA
- QuoVadis Limited
- RSA Data Security, Inc.
- RSA Security Inc
- SECOM Trust.net
- Sonera
- Staad der Nederlanden
- TC TrustCenter for Security in Data Networks GmbH
- TDC
- TDC Internet
- Thawte
- Thawte Consulting
- Thawte Consulting cc
- The USERTRUST Network
- Unizeto Sp. z o.o.
- VISA
- ValiCert, Inc.
- VeriSign, Inc.
- beTRUSTed
Rumor has it that Microsoft Internet Explorer comes stock with 98 trusted root cert authorities. We don't use Internet Explorer, so we haven't confirmed that for ourselves, though.