
WHOIS JSON API
ViewDNS.info
WhoisXML API
ipinfo.io
DomainTools
SecurityTrails
Advanced Network Intelligence API featuring enriched Reverse IP lookups, historical hostname mapping, and fully parsed WHOIS data for IPs and domains. Built for security researchers and developers seeking structured, actionable network insights.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | ip-ninja.com | diffyn.com |
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| Company | Startup from France | — |
| Listed in |
In their own words, as submitted to SaaSHub.


IP Ninja: Advanced Network Intelligence & Historical Data API IP Ninja is a high-performance intelligence platform designed for cybersecurity professionals, threat hunters, and developers who need deep, structured insights into network infrastructure. Unlike standard tools that only provide...
No description of Diffyn yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing IP Ninja and Diffyn.
IP Ninja's answer
IP Ninja stands out by bridging the gap between real-time DNS queries and deep historical data. Unlike basic lookup tools, we maintain a massive internal database built from months of passive DNS collection, allowing users to uncover hostname associations that no longer exist in current live records.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
IP Ninja's answer
Users choose IP Ninja for its developer-first approach and data structure. While competitors often return messy, raw WHOIS text, we provide 100% parsed and normalized JSON for both IP and domain data. Additionally, our pricing is designed to be accessible for independent researchers while offering professional-grade historical depth that is usually locked behind enterprise-level paywalls.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
IP Ninja's answer
IP Ninja is built on a high-performance stack optimized for massive data ingestion and low-latency API responses. Our core infrastructure utilizes advanced databases for historical DNS mapping, high-speed scanning engines for real-time probing, and a RESTful API architecture that delivers structured JSON payloads via secure HTTPS.
Diffyn's answer:
React, Next.js, POSTGRESQL
IP Ninja's answer
The primary audience consists of cybersecurity professionals, threat intelligence analysts, and DevOps engineers. It is also an essential tool for OSINT (Open Source Intelligence) researchers and fraud prevention teams who need to map out infrastructure or investigate the ownership and history of suspicious network assets.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
IP Ninja's answer
IP Ninja was born out of a practical need in the cybersecurity field. Most existing tools were either too expensive for individual researchers or too simplistic, offering only surface-level "live" data. We built IP Ninja to provide a more transparent and deeper view of the internet's infrastructure, focusing on the "memory" of IP addresses to help experts connect the dots in complex investigations.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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