Our IT Tools
We build and maintain free web tools designed specifically for IT professionals. Each tool is open, browser-based, and requires no installation or account.
RAID 0/1/5/6/10/50/60 storage planner
RAID Calculator
Calculate usable space, efficiency and fault tolerance for any RAID level. Compare all RAID configurations side by side, estimate rebuild times, and use the built-in quick reference cheat sheet.
iptables, UFW, Windows Firewall & more
Firewall Rule Builder
Generate firewall rules for iptables, nftables, UFW, Windows Firewall (CMD/PowerShell), Cisco ACL and pfSense. Use presets for common rules like SSH, HTTP, RDP, or build custom rules and export a full script.
SPF, DKIM & DMARC verification
Email Header Analyzer
Paste raw email headers and instantly check SPF, DKIM, and DMARC authentication results. Visualize routing hops, detect phishing indicators, and get a security score out of 100.
Parse & diagnose logs instantly
Log Analyzer
Analyze Windows Event Viewer, Syslog, IIS, Apache, and other log formats. Identify errors, warnings, and patterns with instant visual highlighting.
Active Directory diagnostics made simple
DCDiag Analyzer
Paste your DCDiag output and get an instant, color-coded analysis. Quickly identify failing tests, replication issues, and DNS problems in your AD infrastructure.
Network planning & CIDR calculations
Subnet Calculator
Calculate subnet masks, network ranges, broadcast addresses, and usable host counts. Supports CIDR notation and splits networks into subnets with ease.
Plan your VLAN segmentation
VLAN Calculator
Design and calculate VLAN configurations for your network. Assign IDs, plan trunk ports, and visualize Layer 2 segmentation for your infrastructure.
Cryptographically strong passwords
Password Generator
Generate secure, random passwords with customizable rules: length, complexity, special characters, and entropy strength. Includes bulk generation and policy compliance checks.
Visualize your server rack layouts
Rack Designer
Design professional server rack diagrams with drag-and-drop simplicity. Add 1U/2U/4U equipment, manage power density, and export clean rack documentation.
Microsoft Zero Trust maturity assessment
Zero Trust Explorer
Assess your organization's Zero Trust maturity across Microsoft's 7 security pillars: Identity, Endpoints, Data, Applications, Infrastructure, Networks, and Security Operations. Get personalized recommendations linked to real-world articles.
Managed bookmarks for Edge & Chrome via Intune
Bookmark Editor
Edit managed bookmarks visually for Microsoft Edge and Google Chrome. Import existing configs, convert between formats, compare diffs, and generate ready-to-paste Intune OMA-URI policies.
All our tools are free to use, no account required.