Tools
Security, networking, and analysis tools for IT professionals.
No account required — 29 tools free, no signup needed
Network Engineering
Subnetting, routing, and network diagnostics for engineers and admins.
Subnet Calculator
Calculate network range, broadcast address, and usable hosts.
IP to Binary Converter
Convert IPv4 addresses into binary format for subnetting analysis.
DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME records for any domain.
MAC Address Lookup
Identify the manufacturer of any network device from its MAC OUI.
BGP / ASN Lookup
Routing prefixes, ASN details, RIR allocation, and abuse contacts.
Ping / Connectivity
Check if a host is reachable and measure response time.
Advanced Subnet Breakdown
ProFull subnet breakdown with wildcard masks and usable IP ranges.
VLSM Calculator
ProPlan and allocate variable length subnets across a base network.
RF Link Budget Tool
ProCalculate path loss, received power, and link margin for RF links.
Network Dashboard
ProLive network info and downloadable terminal dashboard with system stats.
Network Scanner
ProScan your LAN for devices — IP, hostname, MAC, vendor, and type.
Threat Intelligence & OSINT
Passive recon, infrastructure mapping, and threat data for analysts and researchers.
IP Reputation Lookup
Geolocation, ISP, ASN, abuse score, and threat flags for any IP.
WHOIS Lookup
Domain registration, registrar, expiry, nameservers, and DNSSEC.
CVE Lookup
Search the NIST NVD for vulnerabilities by CVE ID or keyword.
Subdomain Finder
Enumerate subdomains via certificate transparency logs. Passive OSINT.
Domain Intelligence
ProFull-stack domain scan — WHOIS, DNS, SSL, IP reputation, subdomains, lookalike detection, and threat signals in one report.
Vulnerability Intelligence
ProDeep CVE analysis — CVSS breakdown, EPSS exploitation probability, CISA KEV status, patch priority score, and remediation plan.
Bulk IP Lookup
ProGeolocate and threat-check up to 100 IPs at once. Export to CSV.
Pen Testing & Recon
Active recon tools for authorized security testing and vulnerability assessment.
URL Scanner
Check any link for phishing, malware, and scam indicators.
Password Breach Checker
Check if a password appeared in a known breach. Never leaves your browser.
AppSec Console
ProOne-click application security audit — SSL, DNS, headers, IP rep, subdomains, and tech stack in one report.
Forensics & Analysis
Inspect, decode, and analyze artifacts from emails, web traffic, and cryptographic operations.
Email Header Analyzer
Trace origin IP, check SPF/DKIM/DMARC, and detect spoofed senders.
HTTP Headers Inspector
Inspect response headers and check for missing security headers.
SSL Certificate Checker
Certificate validity, expiry, issuer, TLS version, and SANs.
JWT Decoder
Decode JWT tokens — header, payload, expiry, and claims.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 from any text.
Base64 Encoder / Decoder
Encode or decode Base64 strings instantly in your browser.
Electrical Engineering
Circuit analysis, component calculators, and RF tools for electrical and electronics engineers.
Circuit Builder
Build series-parallel resistive circuits and get voltage, current, resistance, and power for every component.
Ohm's Law Calculator
Solve for voltage, current, resistance, or power — enter any two values.
Resistor Color Code
Decode 4-band and 5-band resistor color codes to resistance and tolerance.
Voltage Divider Calculator
Calculate Vout, current draw, and power dissipation for two-resistor dividers.
Frequency / Wavelength Converter
Convert between frequency and wavelength for EM waves across Hz to THz.
RC Time Constant Calculator
Calculate τ, charge/discharge times, and cutoff frequency for RC circuits.
Reactance Calculator
Calculate capacitive (Xc) and inductive (XL) reactance at any frequency.
Wire Gauge / AWG Calculator
Look up AWG wire specs — diameter, resistance per foot, and ampacity.
dB / dBm / dBW Converter
Convert between dBm, dBW, watts, and milliwatts for RF and comms work.
Artificial Intelligence
Explore how AI is reshaping the workforce and the tools built to analyze it.
DIY & Hardware
Engineer-grade build guides with full bills of materials and step-by-step instructions.