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calculator.net
Build vs. Buy Calculator
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DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing
BuiltWith
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WhatRuns
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WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.

Which is more popular?
Based on our record, What CMS seems to be more popular. It has been mentioned 11 times since March 2021.
Website, pricing, platforms and company facts side by side.
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WCM
What CMS
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|---|---|---|
| Website | devfinancetools.com | whatcms.org |
| Pricing | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

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...
No description of What CMS yet.
What each product offers, as listed by its team.

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

No analysis of DevFinanceTools yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using DevFinanceTools and What CMS. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking DevFinanceTools since Aug 2026.
Https://whatcms.org/?s=daylightcomputer.com It looks self made. - Source: Hacker News / over 2 years ago
I want to replicate something like this. I've tried https://whatcms.org https://bundlescanner.com https://builtwith.com https://wappalyzer.com to learn. It looks like Jquery Ui to me. Can someone help me please? Source: about 3 years ago
Does anyone know know which theme this site learnprompting.pro is using? whatcms.org is showing it's using shopify but it doesn't show the theme. I'm looking to launch a SaaS tool and this one looks just perfect for my use case. Or if... Source: over 3 years ago
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Should you build an internal tool? Or just buy it?
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Extension that helps you identify technologies used on any website at the click of a button.
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