Free Cybersecurity Tools

Select a category to get started — all tools run offline in your browser

🔡
Encoding & Decoding
14 tools
Base64, URL encode/decode, HTML entities, Hex, JWT builder, SAML decoder, ASCII, Unicode converter
🔐
Cryptography
8 tools
AES / RSA encryption, XOR cipher, Vigenère, ROT13, Caesar — encrypt and decrypt in-browser
⚡
Hashing
11 tools
MD5, SHA-1/256/512/3, NTLM, bcrypt, HMAC, CRC32 — generate and verify hashes instantly
🔑
Password Tools
5 tools
Secure random password generator, strength meter, passphrase builder and entropy estimator
{}
JSON & Data
6 tools
JSON formatter, diff viewer, CSV ↔ JSON, UUID generator, YAML parser, data transformer
🌐
Networking
12 tools
CIDR & subnet calculator, port reference, DNS lookup, IP geolocation, network tools
🕸️
Web Security
16 tools
Reverse shell generator, CSP analyzer, security header checker, payload encoder
🛡️
SOC & Threat Intel
17 tools
IOC extractor, MITRE ATT&CK mapper, CVSS v3 scorer, OSINT dork builder, threat intel
🔬
Forensics / DFIR
8 tools
Hex viewer, magic bytes identifier, EVTX log parser, Wireshark filters, string extractor
⚙️
Developer Utilities
14 tools
Regex tester, code diff, Unix timestamp converter, color picker, HTTP status reference
🏴
CTF Toolkit
6 tools
Rail fence cipher, Bacon cipher, Polybius square, Affine cipher, Columnar transposition
☁️
Cloud Security
8 tools
AWS ARN parser, IAM policy analyzer, SSRF endpoints, Kubernetes RBAC, cloud checklist
🔍
OSINT Toolkit
6 tools
Username generator, domain variations, email patterns, OSINT framework, Google dorks
📱
Mobile Security
5 tools
Android permissions, ADB commands, Frida templates, SSL pinning bypass, mobile checklist
📄
Reporting Templates
5 tools
Pentest reports, bug bounty write-ups, vulnerability advisories, incident reports, risk matrix
🤖
AI / LLM Security
5 tools
Prompt injection payloads, OWASP LLM Top 10, AI security checklist, RAG attacks, red team

Browse all tools

🔡Encoding & Decoding14

Base64 Encoder/Decoder URL Encoder/Decoder HTML Encoder/Decoder JWT Decoder Unicode Converter JWT Secret Brute Force Payload Unwrapper Binary ↔ Text Base32 Encoder/Decoder Hex ↔ Text Converter JWT Builder / Signer SAML Assertion Decoder Number Base Converter ROT13 / Caesar Cipher

🔐Cryptography8

XOR Cipher Vigenère Cipher Morse Code Frequency Analysis AES-256-GCM Encrypt/Decrypt Atbash Cipher ROT Brute Force RSA Key Generator

⚡Hashing11

MD5 Hash SHA1 Hash SHA256 Hash SHA512 Hash NTLM Hash Calculator HMAC Generator Hash Identifier SHA-3 (Keccak) Hash Generator CRC32 Checksum BLAKE2b Hash File Hash Verifier

🔑Password Tools5

Password Generator Password Strength Checker Entropy Calculator Passphrase Generator Hash Cracker (Offline)

{}JSON & Data6

JSON Formatter JSON Validator JSON Minifier XML Formatter YAML ↔ JSON CSV ↔ JSON Converter

🌐Networking12

CIDR Calculator IPv4 Calculator IPv6 Calculator Port Reference Tool Subnet Calculator DNS Lookup IP Info & Analysis IP ↔ Integer Converter MAC Address Analyzer Nmap Command Builder IP Range Expander Firewall Rule Builder

🕸️Web Security16

CSP Analyzer Cookie Parser HTTP Status Codes User-Agent Parser JWT Decoder URL Analyzer Shellcode Encoder SQL Injection Payload Library XSS Payload Library Path Traversal Payloads Security Headers Builder SSRF Payload Library XXE Payload Library File Upload Bypass Payloads Open Redirect Payloads Deserialization Payload Library

🛡️SOC & Threat Intel17

IOC Extractor IOC Parser / Defanger CVSS 3.1 Calculator Log Analyzer Sigma Rule Converter Snort / Suricata Rule Builder Sigma Rule Builder MITRE ATT&CK Lookup YARA Rule Builder SOC Pattern Library OSINT Dork Builder Email Header Analyzer CVE Lookup (Offline) CVSS v4.0 Calculator KQL / SPL Query Library Incident Timeline Builder MITRE Log Simulator

🔬Forensics / DFIR8

Strings Extractor Magic Bytes / File Signature Windows Event ID Lookup Hex Viewer Data Entropy Analyzer Event Log Parser Volatility Command Builder Wireshark Filter Cheatsheet

⚙️Developer Utilities14

UUID Generator Word Counter Case Converter Docker Command Builder HTTP Request Builder QR Code Generator Color Converter HTTP Headers Analyzer Cron Expression Parser Timestamp Converter URL Parser Regex Tester Certificate Parser Diff Tool

🏴CTF Toolkit6

Rail Fence Cipher Bacon's Cipher Polybius Square Affine Cipher Columnar Transposition CTF Writeup Archive

☁️Cloud Security8

AWS ARN Parser / Builder AWS IAM Policy Analyzer Cloud Metadata SSRF Endpoints Kubernetes RBAC Reference Cloud Security Checklist Azure RBAC Role Analyzer GCP IAM Policy Analyzer Kubernetes Manifest Linter

🔍OSINT Toolkit6

Username Format Generator Domain Variation Generator Corporate Email Pattern Generator OSINT Framework Reference OSINT Google Dork Builder Phone Number Format Analyzer

📱Mobile Security5

Android Permission Reference ADB Command Builder Frida Script Templates SSL Pinning Bypass Techniques Mobile Pentest Checklist (OWASP)

📄Reporting Templates5

Pentest Report Generator Bug Bounty Write-up Generator Vulnerability Advisory Generator Incident Report Generator Risk Matrix Calculator

🤖AI / LLM Security5

Prompt Injection Payload Library OWASP LLM Top 10 Reference AI System Security Checklist RAG Attack Techniques Reference LLM Red Team Prompt Builder