Free Cybersecurity Tools
Professional-grade tools. Zero cost. Zero signup.
Browser-based security utilities you can use without signing up. Every tool runs entirely in your browser — no data is sent to a server, no analytics on your input, no account required.
Password Strength Checker
Test your password's entropy and time-to-crack against a 10 billion guesses/sec offline attack. 100% client-side — nothing leaves your browser.
HTTP Security Headers Checker
Scan any URL for CSP, HSTS, X-Frame-Options, Referrer-Policy and more. Get an instant A+ to F grade with actionable hardening recommendations.
IPv4 Subnet Calculator
Instantly calculate network and broadcast addresses, usable host range, wildcard mask, binary form, and IPv4 class for any IP + CIDR.
Cybersecurity Salary Calculator
Estimate your 2026 cybersecurity salary based on role, experience, region, and certifications. Includes bar chart vs. all roles and a personalized salary range.
Cybersecurity Career Quiz
Take a 2-minute, 10-question quiz to discover your ideal cybersecurity career path — from red-team pentesting to CISO. Personalized cert, tool, and learning recommendations.
Nmap Cheat Sheet
Printable Nmap command reference — basic scans, port specs, NSE scripts, output formats, timing, evasion, and real-world combos. Click-to-copy and print-to-PDF.
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