lissy93/networking-toolbox

Health v2 · maintenance only

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2652 stars · 232 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Networking Toolbox is a collection of 100+ free, open-source networking utilities for system administrators and network engineers, covering DNS lookups, subnetting, TLS/HTTP analysis, and IP tools. It runs offline-first in the browser, offers a free API, and can be self-hosted via Docker.

Use cases

• calculate ipv4 and ipv6 subnets and cidr ranges
• check dns propagation and validate spf dkim dmarc records
• analyze tls certificates and security headers of a website
• look up asn, bgp routes, and ip geolocation
• convert mac address formats and find the vendor from oui
• test dns resolver performance across providers
• self-host a suite of offline networking utilities
• generate dhcp option 43 for wireless controller discovery

When to choose

• you need a quick, free, no-signup toolbox for common network diagnostics
• you want offline-capable tools that work without sending data to third parties
• you're a sysadmin or network engineer doing dns, subnetting, or tls analysis regularly
• you want to self-host networking utilities on your own server via docker

When to avoid

• you need deep packet capture or traffic analysis (use Wireshark instead)
• you require continuous network monitoring and alerting rather than on-demand checks
• you need programmatic automation at scale beyond the provided API
• you need GUI-based network mapping or topology discovery tools

Facets

application · maturity active

developer-tools networking security cli self-hosted networking security developer-tools self-hosted self-hosted cross-platform networking-tools dns-tools subnet-calculator offline-first sysadmin svelte tls-analysis ip-lookup command-line web-server docker nodejs

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markdown · JSON · MCP: product_card(name="lissy93/networking-toolbox")