Network
IP Address & Subnet Manager
Design IP plans, VLANs and subnets with professional network planning tools.
Free tools, built for real work
Free IT, network and security tools that make complex work effortless.
Powerful, easy-to-use utilities for networking, security, infrastructure and everyday productivity. Explore professional tools, free to use.
✦17 free tools
◈No account required
⚡Fast access
◎Mobile friendly
Find your next favorite utility
From subnet design to asset labels, the right tool is a click away.
Security
InfraAudit Studio
Review infrastructure inventories, evidence and security risks.
Network
Network Impact Studio
Map network changes, connections and potential service impact.
Security
Firewall & DMZ Design Studio
Plan firewall zones, DMZ boundaries and network policies.
Recovery
RecoveryLab Studio
Model backup strategy, disaster recovery and restoration readiness.
Operations
ConfigGuard Studio
Inspect and compare network configuration evidence.
Operations
PatchPilot Studio
Plan patch windows, risks and maintenance operations.
Identity
AccessLens Studio
Analyze identity, group membership and effective access.
Operations
TraceMerge Studio
Correlate logs, timelines and incident investigation evidence.
Productivity
SignCraft Studio
Create branded email signatures, contact cards and QR details.
Productivity
LabelForge Studio
Design branded barcode, QR and Zebra asset labels with Excel imports.
Network
AirGrid Studio — Wi-Fi Planner
Plan access-point locations, view estimated Wi-Fi coverage, calculate capacity and export deployment plans.
Security
Email Security Checker
Grade SPF, DKIM and DMARC against the 2026 standard, analyze headers and get fixed records.
Network
DNS Lookup
Look up A, AAAA, MX, TXT, NS, CAA and PTR records and compare two public resolvers.
Operations
SLA & Uptime Calculator
Convert SLA percentages to allowed downtime and calculate combined availability.
Security
SSL Certificate & CSR Decoder
Decode certificates, chains and CSRs: expiry, SANs, key size and fingerprints.
Security
Hash & Checksum Verifier
Calculate MD5, SHA-1 and SHA-256 of files or text and verify downloads.
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Local processing in supported workflows; review each tool's notices.
Designed for devices
Built with responsive screens and touch support in mind.