The Network Tools vs Port Zero

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

The Network Tools compared with Port Zero
Detail	The Network Tools	Port Zero
What it does	Free network diagnostic tools for DNS, IP, email and SSL checks	Stable domains for local development ports, eliminating conflicts with free open-source tunnels and paid cloud options
Stage	Not given	Not given
Founded	Not given	Not given
Based in	IN	Not given
Pricing model	Freemium	Freemium
Pricing	Free plan: All 41 tools with unlimited checks, 3 saved domains with daily monitoring, 7 days of history. Pro plan: $29/month for 50 domains, scans every 6 hours, email, Slack, Telegram and webhook alerts, 12 months of history and API access.	Free and Open Source: $0 (unlimited local tunnels, open source); Professional: $49/mo or $490/yr (unlimited cloud tunnels, visitor auth, feedback comments); Team: $149/mo or $1,490/yr (everything in Professional plus unlimited members, teams, shared subdomains, approvals, organization billing); Ente
Key features	DNS Lookup - resolve A, AAAA, MX, TXT, NS, CNAME records Blacklist Checker - query 7 major DNS blocklists SSL/TLS Certificate Checker - verify certificate chain, expiry and protocol support Email Deliverability - check SPF, DKIM and DMARC records WHOIS Lookup - query domain registration details Reverse DNS (PTR) - check IP to hostname resolution Port Checker - test common HTTP/HTTPS ports BIMI Lookup - query BIMI TXT records Domain monitoring with automated scans Multi-channel alerts via email, Slack, Telegram and webhooks	Stable local domains (.portzero.local) for processes and containers Cloud tunnels (.tunnel.portzero.cloud) with HTTPS for LAN and internet access Support for multiple programming languages Git worktree support with per-branch URLs AI agent integration with MCP server Visitor authentication and access control Feedback comments on live tunnels Team access policies and approvals Audit log (Enterprise plan) Organization billing with no per-seat charges
What makes it different	41 tools all available free with unlimited checks Clear sourcing - every result shows its source and what was not tested Live DNS queries from edge servers via DNS-over-HTTPS Domain monitoring and alerts with affordable Pro plan at $29/month	Eliminates port conflicts by assigning stable virtual domains instead of port numbers Free and open source for local use; no additional cost for cloud features on paid plans Flat pricing with no meters, overages, or per-seat charges Agent-ready with native MCP server integration for AI coding agents Works across multiple OS and languages with zero port bookkeeping required
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 +1 (up) since last check	1 no change since last check
Trust Flow (Majestic)	6	4
Citation Flow (Majestic)	17	26
Referring domains (Majestic)	6	135

5 details filled in for both companies.

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