The 40 Best Security Auditing in 2026

Detectify

Application security platform combining payload-based scanning with ethical hacker research.

Contact for Pricing

Best for: AppSec teams that want fast-moving vulnerability coverage backed by real ethical hacker research, not just static scans.

velociraptor

Digital Forensics and Incident Response

Free

Best for: Experienced DFIR teams seeking automation and scalability.

prowler

Automate cloud security and compliance

Free

Best for: Tech-savvy cloud security teams

osquery

Open-source SQL framework for querying and auditing Linux, Windows, and macOS endpoints.

Free

Best for: Security and DevOps teams that want SQL-based, open-source endpoint visibility they can build fleet tooling around.

crowdsec

Open-source, crowdsourced security engine that blocks malicious IPs in real time

Freemium

Best for: Sysadmins/DevOps needing free, community‑driven IP blocking

mitmproxy

Interactive, scriptable man‑in‑the‑middle proxy for HTTP, HTTPS and WebSocket traffic

Free

Best for: Security researchers needing deep, scriptable traffic manipulation

Kali Linux 2023.3

The latest Kali Linux release with updated tools for penetration testing and security research.

Free

Best for: Penetration testers and security researchers needing latest open‑source toolset

Wazuh

Unified XDR and SIEM protection for endpoints and cloud workloads

Free

Best for: Large-scale enterprise security teams

Intruder

Cloud-based exposure management platform for continuous vulnerability scanning.

Contact for Pricing

Best for: Security teams that want continuous, automated vulnerability and cloud misconfiguration scanning in one dashboard.

unleashed-firmware

Stable custom firmware for Flipper Zero with advanced features

Free

Best for: Experienced hackers and makers

SpiderFoot

Automate OSINT for threat intelligence and attack surface mapping

Free

Best for: Large organizations with in-house security teams

CyberChef

The web app for all your data manipulation and decoding needs

Free

Best for: Security analysts needing quick, shareable browser‑based data transforms

OWASP ZAP

Free, open-source web app security scanner stewarded by Checkmarx.

Free

Best for: Teams wanting a free, extensible DAST scanner that fits both manual pentesting and CI/CD automation.

Socket

Supply chain security platform that flags malicious and risky open-source dependencies.

Freemium

Best for: Engineering teams wanting automated, low-noise scanning for malicious or risky open-source dependencies in CI/CD.

shhgit

Secrets detection for GitHub, GitLab and Bitbucket repositories

Free

Best for: Small dev teams and open-source projects

Drata

Automate security compliance and reduce audit prep work

Paid (Subscription)

Best for: Mid-sized businesses with standard compliance needs

connaisseur

Kubernetes admission controller for container image signature verification

Free

Best for: Kubernetes admins seeking robust image security

Tenable Nessus

Vulnerability assessment scanner that finds, prioritizes, and helps remediate security weaknesses.

Paid (Subscription)

Best for: Security teams needing a trusted, actively updated vulnerability scanner with strong risk prioritization.

syft

Generate Software Bill of Materials from container images and filesystems

Free

Best for: DevOps and security teams needing free, comprehensive SBOMs for containers

Forcepoint DLP

Prevent data loss everywhere with precise classification and enforcement.

Best for: Large enterprises and regulated industries needing enterprise‑wide DLP

john

Advanced offline password cracker supporting hundreds of hash types

Free

Best for: Security auditors needing high‑performance, customizable offline hash cracking

Vanta

Automated security compliance monitoring and evidence collection.

Paid (Subscription)

Best for: Mid‑size SaaS firms needing continuous SOC 2/ISO compliance

Sherlock

Find social media profiles by username

Free

Best for: Researchers and casual investigators

Burp Suite

Web application penetration testing toolkit from PortSwigger.

Freemium

Best for: Security professionals who need a proven manual and automated web app testing toolkit.

tpotce

The all-in-one multi honeypot platform for comprehensive network defense.

Free

Best for: Experienced security teams with dedicated resources

dirsearch

Discover hidden web server directories and resources

Free

Best for: Experienced security professionals and penetration testers

strix

Open-source AI penetration testing tool to find and fix vulnerabilities.

Free

Best for: Tech-savvy security teams and developers

Semgrep

Find security bugs fast with customizable pattern‑matching rules

Freemium

Best for: Teams needing fast, customizable static analysis across multiple languages

Secureframe

Compliance automation for security certifications

Contact for Pricing

Best for: Mid-sized businesses seeking SOC 2 compliance

UpGuard

Cyber risk platform for vendor risk, attack surface, and third-party security monitoring

Contact for Pricing

Best for: Security teams that need continuous visibility into vendor risk and external attack surface.

ghidra

Software reverse engineering framework

Free

Best for: Advanced security researchers and developers

x64dbg

Powerful open‑source debugger for Windows reverse engineering

Free

Best for: Seasoned Windows reverse engineers needing extensible debugging

Mobile-Security-Framework-MobSF

Automated mobile app security testing and analysis framework

Free

Best for: Experienced security professionals and developers

Wiz

Cloud security platform for multi-cloud infrastructure

Contact for Pricing

Best for: Cloud-native orgs with multi-cloud infrastructure

Metasploit

Widely used open-source penetration testing framework for finding and exploiting vulnerabilities.

Freemium

Best for: Security professionals who need a free, extensible exploit and pentesting framework.

Snyk

Secure code by finding and fixing open-source, container and IaC vulnerabilities.

Freemium

Best for: Dev teams needing automated vulnerability fixes in CI pipelines

lynis

Security auditing and system hardening tool

Free

Best for: Experienced system administrators and security professionals

Greenbone (OpenVAS)

Vulnerability management platform behind the widely used OpenVAS scanning engine, from appliance to free edition.

Freemium

Best for: Teams wanting a free, open-source vulnerability scanner with an option to scale to an enterprise appliance.