Free Cyber Tools
cybersecurity, Open Source

Free and Open Source Cyber Security tool chains vs  Commercial

This is a list of Mature Open Source Information Security Tools that you can use in your Operational Security Program to assist in managing your security posture. We've also included the comparable Commercial tools in each space to help you understand where each tool plays in your defense in depth stack.

These tools all have mature development histories, and robust help forums and communities.

If there's an area of Information Security missing (we know there are several) that you are looking for a tool to fill, please email info@teamciso.com, and we'll research it for you. Also, if you've been using a particular Open Source Information Security tool not listed here, and feel it needs recognition, please also feel free to reach out info@teamciso.com.

Firewalls:

Note: Most Firewall vendors (both Commercial and Open Source) now include IDS/IPS and URL/WEB filtering as a part of the perimeter security package.

Commercial:

Open Source:

Intrusion Detection/Protection:

Commercial:

Open Source:

URL Filtering:

Commercial:

Open Source:

Email Gateway Security:

Commercial:

Open Source:

Endpoint Protection:

Commercial:

Open Source:

Log Management:

Commercial:

Open Source:

SIEM (Security Incident & Event Management):

Commercial:

Open Source:

Network Vulnerability Assessment:

Commercial:

Open Source:

Application Vulnerability Assessment:

Commercial:

Open Source:

Patch Management:

Commercial:

Open Source:

Threat Hunting ( & Network Monitoring): 

Commercial:

Open Source

Fraud Prevention: 

Commercial:

Open Source

Network and System Forensics: 

Commercial:

Open Source

Cloud Security: 

Commercial:

Open Source

Phishing Toolkit: 

Commercial:

Open Source

Security Awareness Training: 

Commercial:

Open Source

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