Top 25 Open Source cyber security tools

1. Zeek: https://zeek.org/
Network Security Monitoring

2. ClamAV: https://www.clamav.net/
Antivirus

3. OpenVAS: https://www.openvas.org/
Vulnerability Scanner

4. TheHive: https://lnkd.in/e7aVCRUZ
Incident Response

5. PFSense: https://www.pfsense.org/
Security appliance (firewall/VPN/router)

6. Elastic: https://www.elastic.co/de/
Analytics

7. Osquery: https://www.osquery.io/
Endpoint visibility

8. Arkime: https://arkime.com/
Packet capture and search

9. Wazuh: https://wazuh.com/
XDR and SIEM

10. Alien Vault Ossim: https://lnkd.in/eShQt29h
SIEM

11. Velociraptor: https://lnkd.in/eYehEaNa
Forensic and IR

12. MISP project: https://lnkd.in/emaSrT57
Information sharing and Threat Intelligence

13. Kali: https://www.kali.org/
Security OS

14. Parrot: https://www.parrotsec.org/
Security OS

15. OpenIAM: https://www.openiam.com/
IAM

16. Yara: https://lnkd.in/eEJegEak
Patterns

17. Wireguard: https://www.wireguard.com/
VPN

18. OSSEC: https://www.ossec.net/
HIDS

19. Suricata: https://suricata.io/
IDS/IPS

20. Shuffler: https://shuffler.io/
SOAR

21. Phish Report: https://phish.report/
Anti Phishing

22. Graylog: https://lnkd.in/eAFuUmuw
Logmanagement

23. Trivy: https://lnkd.in/e7JxXStY
DevOps/IaC Scanning

24. OpenEDR: https://openedr.com/
EDR

25. Metasploit: https://lnkd.in/e4ECX-py
Pentest

26. NMAP: https://nmap.org/
Old but gold