Sentrigo
- A host-based database security monitoring, auditing and prevention tool.
- http://www.sentrigo.com/

ensync solutions
- Oracle Security Check will scan an Oracle instance and check for known default usernames and passwords.
- http://www.ensyncsolutions.com/prod_oracle_security.html

Symantec Enterprise Security Manager
- Discovery of policy deviations and vulnerabilities for mission-critical applications. Policies are designed for specific version combinations, such as Oracle 9i on Solaris 8, rather than for the least common denominator.
- http://www.symantec.com/enterprise/products/overview.jsp?pcid=1004&pvid=855_1

Network Intelligence India
- The AuditPro suite of security auditing software. Also security services including penetration testing, and vulnerability assessment.
- http://www.niiconsulting.com

A simple Oracle installation security scanner
- Check for Known Passwords.
- http://www.derkeiler.com/Mailing-Lists/Securiteam/2002-01/0056.html

Relational Database Consultants, Inc.
- Offer a database encryption tool, as well as performance tuning and remote DBA support services. Based in Los Angeles, California, USA.
- http://www.relationalwizards.com/

Red-Database-Security
- Oracle Security alerts, published and upcoming and security whitepapers.
- http://www.red-database-security.com

P6Spy
- An open source Java tool that intercepts and logs all database statements that use JDBC. Also some GUI add-ons that allow SQL analysis and caching.
- http://www.p6spy.com/

Pete Finnigan
- A website and blog aimed squarely at those interested in the security of Oracle databases.
- http://www.petefinnigan.com/

NGS Software
- Vulnerability scanners, SQL and Oracle auditing applications.
- http://www.nextgenss.com/

NetIQ: VigilEnt Security Manager
- Establish security configuration baselines and continuously audit for security vulnerabilities.
- http://www.netiq.com/products/vsm/default.asp

Nessus
- Security scanner for Oracle and various flavors of Unix. Performs over 900 remote security checks, and suggests solutions for security problems.
- http://www.nessus.org/

ISS - Internet Security Systems
- A pioneer and leading supplier of adaptive security management systems, providing innovative software that enables maximum protection from network security risks.
- http://www.iss.net/

Integrigy
- AppSentry and AppDefend - intrusion prevention for Oracle database and Oracle applications.
- http://www.integrigy.com/

Cqure.net
- Security tools and links to security related information. OracleSAMDump, OraclePWGUess, OracleQuery.
- http://www.cqure.net/

Application Security Inc.
- AppDetective - Network-based vulnerability assessment tool, DbEncrypt - encrypt column and row data, AppRadar - Intrusion detection.
- http://www.appsecinc.com/products/