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zonefiles.io
WhoisXML API
Whois extractor
Domains Index
DomainTools
DomainWatch
Monitor and analyze over 157M+ domains across 4882+ zones. Bulk domain data and real-time API access for threat intelligence teams.

Website, pricing, platforms and company facts side by side.
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| Website | open-gpt.app | primitive.host |
| Pricing | — | |
| Company | — | Startup from Greece · 2026 |
| Listed in | — |
In their own words, as submitted to SaaSHub.


No description of https://open-gpt.app/ yet.
Primitive Host is a domain intelligence platform built to help people monitor domains, brand activity, and relevant signals around the internet’s naming layer. It focuses on turning raw domain data into something practical you can actually use for tracking exposure, spotting suspicious activity,...
What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
As answered by people managing https://open-gpt.app/ and Primitive.
Primitive's answer:
Clean, daily-updated domain intelligence at 322M+ domain scale, built specifically for phishing detection and alert enrichment — not raw WHOIS dumps or scraping pipelines.
Primitive's answer:
Cybersecurity teams — threat intel, SOC/IR, and security product engineers — who need fresh, normalised domain data for phishing detection, alert enrichment, and infrastructure mapping.
Primitive's answer:
Primitive delivers daily-updated, normalised domain intelligence at 322M+ domain scale — built specifically for phishing detection and alert enrichment, not historical WHOIS research or ad-hoc lookups.
Primitive's answer:
A REST API and bulk-export platform built on a continuous zone-file ingestion and DNS enrichment pipeline, delivering normalised domain intelligence across 5,700+ TLDs for SIEM/SOAR integration.
Share your experience with using https://open-gpt.app/ and Primitive. For example, how are they different and which one is better?