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🌐 CIDR 🔐 JWT 📝 Base64 ⏰ Cron 🔒 Hash 📋 Regex 🌍 DNS 🐍 Scripts 🖥 SSH Key ⚓ Ports
Tool
🔍 Log Query Builder & Parser
🔐 Security Header Tester
⏱️ Cron Expression Visualizer
🔒 SSL Certificate Checker
📝 Advanced Regex Tester
🌐 DNS Propagation Checker
⚙️ Systemd Service Generator
⌨️ Command Library — 500 Linux Commands
All Tools 28 tools
🌐
CIDR Calculator
Subnet ranges, masks, host counts
Network
🔐
JWT Decoder
Decode & inspect JSON web tokens
Security
📝
Base64 Encode/Decode
Encode or decode Base64 strings
Encoding
Cron Generator
Build and visualize cron expressions
System
🔒
Hash Generator
MD5, SHA-1, SHA-256, SHA-512
Security
📋
Regex Tester
Test patterns with live highlighting
Dev
🌍
DNS Lookup
A, AAAA, MX, TXT, CNAME records
Network
🖥
SSH Key Generator
Generate RSA / Ed25519 keypairs
Security
Port Reference
Well-known ports and services DB
Network
🔑
Password Generator
Secure passwords with entropy score
Security
🔗
URL Encode/Decode
Percent-encode URLs and query strings
Encoding
🐍
Scripts Library
50+ Python scripts for sysadmins
Scripts
🎨
Color Converter
HEX ↔ RGB ↔ HSL conversion
Dev
🔄
JSON Formatter
Format, validate and minify JSON
Dev
🛡
IP Reputation
Check IP against threat databases
Security
🔍
SSL Checker
Inspect SSL certificates and expiry
Network
🕐
Timestamp Converter
Unix timestamps ↔ human-readable
System
📄
Config Generator
nginx, apache, systemd configs
System
⚙️
Subnet Converter
Convert between subnet mask formats
Network
🔐
MAC Vendor Lookup
Identify hardware vendor from MAC
Network
📊
HTTP Status Lookup
Meanings for all HTTP status codes
Dev
📑
Diff Checker
Compare two texts side by side
Dev
📱
QR Code Generator
Generate QR codes from any text/URL
Misc
💻
Command Reference
300+ Linux/Docker/K8s commands
System
⚠️
Error Code DB
HTTP, exit codes, errno lookup
System
🛡️
Chmod Calculator
Visual Linux permissions generator
System
🔄
YAML ↔ JSON
Convert and validate YAML/JSON
Dev
🌐
cURL Builder
Generate cURL requests visually
Dev
🔍
Log Query Builder
Parse and analyze server logs
Advanced
🔐
Security Header Tester
Audit HTTP security headers
Advanced
⏱️
Cron Visualizer
Visualize cron schedule execution
Advanced
🔒
SSL Certificate Checker
Full TLS certificate analysis
Advanced
📝
Advanced Regex Tester
Full regex engine with captures
Advanced
🌐
DNS Propagation
Check DNS across 12 global resolvers
Advanced
⚙️
Systemd Generator
Build systemd service unit files
Advanced
⌨️
Command Library
500+ Linux, Docker & K8s commands
Advanced
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⚠️ IMPORTANT DISCLAIMER: The tools, scripts, and command references on this site are provided "AS IS" for educational and administrative purposes.

Always review commands (especially destructive ones like rm -rf, dd, or chmod -R) before executing them in a production environment. You assume all risk and responsibility for your actions.