Free Cybersecurity Tools

Calculate recommended cybersecurity budget based on industry benchmarks, compliance needs, and risk factors

Estimate the potential financial impact of a data breach using IBM 2024 methodology

Justify security investments with ROI calculations, payback periods, and NPV analysis

Evaluate your security posture across 9 domains and get a personalized improvement roadmap

Convert vendor risk (VRM) maturity into Annual Loss Expectancy and receive a tailored vendor action plan

Interactive cloud security benchmark for AWS, Azure, and GCP with instant remediation guidance and compliance insights

Compare cloud computing costs across AWS, Azure, and Oracle Cloud. Get instant pricing estimates for compute instances with real-time data

Estimate cloud emissions by provider and region, then model rightsizing and greener deployment scenarios to reduce carbon impact.

Interactive ransomware recovery diagnostic that measures immutability, RTO delta, and SaaS gaps with instant remediation roadmap

Score likelihood and impact, generate heat maps, and build risk registers aligned to NIST, ISO 27005, and FAIR frameworks

Calculate optimal RTO/RPO targets, analyze downtime costs, and compare backup strategies with cost-benefit analysis

Calculate system reliability metrics (MTBF, MTTR, MTTA, MTTD, MTTF), analyze availability, estimate downtime costs, track SLA compliance, and improve operational reliability with data-driven insights

Calculate service level objectives, error budgets, burn rates, and downtime costs. Compare multi-tier SLAs based on Google SRE best practices

Test your password strength and get recommendations for improvement

Generate secure random passwords with customizable options

Search CVEs, visualize vendor trends, analyze response times, and calculate CVSS scores

Look up Common Weakness Enumeration entries from MITRE with detailed mitigations and Top 25 list

Desktop app for filesystem analysis and security auditing with SSH scanning (macOS, Windows, Linux)

Generate cryptographic hashes (MD5, SHA-256, SHA-512) for files and text. Check malware with VirusTotal integration.

Encode and decode Base64, Hex, Binary, and other formats with file support

Decode and analyze JSON Web Tokens with security validation

Debug OAuth 2.0 and OpenID Connect flows with JWT decoder, PKCE generator, flow tester, and error troubleshooting

Encode and decode text using ROT13 and Caesar cipher

Decode and analyze SSL/TLS certificates with security validation

Generate CSRs, convert between PEM/DER/PFX/P7B formats, and verify certificate chains - 100% client-side

Encrypt and decrypt with XOR cipher, includes brute force analysis

Multi-technique deobfuscation tool for malware analysis with auto-detection and chaining

Defang and refang URLs, IPs, and domains for threat intelligence

Disassemble x86/ARM/RISC-V machine code with assembler, shellcode detection, call graphs, and performance analysis

Explore MITRE ATT&CK tactics and techniques for threat hunting

Visual Nmap command generator with preset templates and intelligent results parser

Visual Metasploit command generator with module presets, payload selector, and console command reference

Detect homograph attacks and typosquatting. Analyze suspicious domains or generate protective variants

Check IP reputation, geolocation, and threat intelligence with fraud detection

Search Certificate Transparency logs for SSL/TLS certificates and subdomains

Create customized IR playbooks for ransomware, data breaches, DDoS, and operational runbooks for deployments and outages. Includes compliance guidance (GDPR, HIPAA, PCI-DSS), team roles, and export to PDF/Markdown

Validate SPF, DKIM, and DMARC records with security grading and recommendations

Validate email syntax, MX records, disposable domains, and provider risk scoring

Analyze email headers for SPF/DKIM/DMARC validation, routing, and security threats

Test HTTP security headers and get security scores with actionable recommendations

Identify true file types by analyzing magic numbers and detect extension spoofing

Extract indicators of compromise (IPs, domains, URLs, hashes) from threat intel

Aggregate IOCs from multiple feeds, deduplicate indicators, and export collections for investigations

Look up hash values to identify known malware and file signatures

Parse and analyze robots.txt files with path testing and security checks

Analyze HTTP cookies for security issues and privacy concerns

Generate DMARC records with step-by-step wizard, preset templates, and deployment roadmap

Scan websites for GDPR compliance issues including cookie consent, privacy policy, and third-party trackers

Generate Content Security Policy headers with nonce/hash support and validation

Generate SPF records with automatic DNS lookup counter and optimization

Detect and analyze CORS misconfigurations, security vulnerabilities, and policy issues

Extract ASCII and Unicode strings from binary files for malware analysis with IOC pattern detection

Calculate Shannon entropy to detect packed, encrypted, or obfuscated malware in binary files

Binary file viewer and editor with hex/ASCII display, search, bookmarks, and byte editing

Calculate subnet masks, network ranges, and IP addressing

Query DNS records with email security analysis and health scoring

Comprehensive network port reference database with search - 5,900+ ports

Expand shortened URLs safely and analyze redirect chains with security checks

Trace HTTP redirect chains and analyze response headers for debugging

Look up geographic location, ISP, and threat intelligence for IP addresses

Query domain registration information, expiration dates, and nameservers

Advanced MAC address analyzer with instant OUI lookup, batch processing, vendor search, duplicate detection, binary visualization, EUI-64 conversion, and lookup history

Calculate network latency, ping distance, and data transfer times between locations

Calculate optimal TCP window sizes, BDP, and buffer configurations for WAN optimization. Generate OS-specific tuning commands for Linux, Windows, and macOS to maximize network throughput.

Analyze Terraform plans for security risks, blast radius, and dependencies. Reduce production incidents by understanding infrastructure changes before applying them.

Interactive developer tool for constructing, sending, and analyzing HTTP requests directly from the browser

Convert CSV files to JSON format instantly with browser-based processing

Convert Excel spreadsheets to JSON with multi-sheet support and custom formatting options

Convert YAML to JSON or JSON to YAML with full support for comments and anchors

Compare text, code, or configuration files side by side

Generate unique identifiers for development and testing

Convert between Unix timestamps and human-readable dates

Generate placeholder text for design and development

Real-time word counter with readability analysis, SEO optimization, keyword density, writing goals, and productivity tracking

Create QR codes for URLs, text, and contact information

Pick colors and convert between HEX, RGB, HSL, and HSV formats

Encode and decode HTML entities with XSS prevention analysis

Comprehensive HTTP status code reference with search and explanations

Searchable Git workflow cookbook with safe undo commands and best practices

Convert between JSON, YAML, XML, TOML, and CSV with real-time validation

Format, validate, and minify JSON with syntax highlighting

Generate temporary webhook endpoints, capture payloads, and validate signatures for GitHub, Stripe, Shopify, Twilio, and Slack

Validate JSON with detailed error messages and tree visualization

Test regular expressions with pattern library and explanations

Encode and decode URLs with component breakdown and query parsing

Parse User-Agent strings to identify browsers, OS, and devices

Live markdown editor with GitHub Flavored Markdown support

Generate customizable word clouds from raw text with filters and export options

Model API throttling budgets, per-client limits, and queue sizing to avoid 429 errors

Format and beautify SQL queries with multi-dialect support

Build and validate cron expressions with visual interface

Track multiple timezones with time conversion and meeting planner

Generate Subresource Integrity hashes for scripts and stylesheets

Generate domain variations across all TLDs for brand protection and research

Convert page counts between book trim sizes (8.5×11 to 6×9), calculate words per page, estimate spine width, and verify KDP compatibility

Generate webhook payloads with HMAC signatures for Stripe, GitHub, Slack, Shopify, Twilio, SendGrid, Discord and more