The Network Tools vs TestFlows Machine

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 TestFlows Machine
Detail	The Network Tools	TestFlows Machine
What it does	Free network diagnostic tools for DNS, IP, email and SSL checks	Run your programs deterministically. Record, replay, and branch your runs.
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: €0 with ₡3 credits included each month (about 20 vCPU-hours). Starter: €10/month with ₡25 credits (about 166 vCPU-hours). Plus: €25/month with ₡65 credits (about 433 vCPU-hours). Pro: €50/month with ₡150 credits (about 1,000 vCPU-hours). Dedicated: contact sales. Usage credits: €1 a credit, pu
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	Record runs with non-deterministic inputs pinned down Replay runs instruction-by-instruction Checkpoint and fork from any point Fault injection for disk, network, clock, containers and system calls Built-in debugger for machine programs Machine client and Python SDK Cloud storage for runs and disk images Multiple simultaneous sessions with configurable vCPUs Configurable session disk up to 256G
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	Deterministic replay of program runs with identical outcomes Fork and branch from any point without losing original timeline Comprehensive fault injection testing built-in Pay-as-you-go usage credits with free plan available
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	2 no change since last check
Trust Flow (Majestic)	6	4
Citation Flow (Majestic)	17	21
Referring domains (Majestic)	6	27

5 details filled in for both companies.

More alternatives to The Network Tools More alternatives to TestFlows Machine