
ViewDNS.info
DomainTools
Whois.net
iamroot.tech
SpiralBig
IP Ninja
NsLookup.io
Platform provides domains registration info (WHOIS) in JSON format

Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing
Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | whoisjsonapi.com | devfinancetools.com |
| Pricing | ||
| Company | Startup from the United States · 1 - 9 employees · 2022 | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


Our service helps you quickly find accurate WHOIS details about domain names. This information is provided in JSON format, ensuring proper parsing and normalization for seamless integration into your business workflows.
DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
What each product offers, as listed by its team.


How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using WHOIS JSON API and DevFinanceTools. For example, how are they different and which one is better?
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Domain name research, including comprehensive Whois Lookup, Reverse Whois Lookup and Whois History.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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Whois lookup for domain name search, registration and availability.
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Should you build an internal tool? Or just buy it?
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