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FOSS tools for developers

PropertyDecide
MorgCalc
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PoundWise.uk
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Salary-Calculator.ai
Free, accurate UK property and finance calculators including stamp duty, mortgage repayments, and take-home pay.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | developertools.tech | propertycalc.site |
| Pricing | — | |
| Company | — | Startup from the United Kingdom · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of DeveloperTools.Tech yet.
PropertyCalc offers free, accurate UK property and finance calculators designed for homebuyers, landlords, and anyone managing their finances. Calculate stamp duty land tax for England and Northern Ireland, estimate monthly mortgage repayments with detailed amortization schedules, and work out...
What each product offers, as listed by its team.


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Overall verdict
Why this product is good
Recommended for
Overall verdict
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DeveloperTools.Tech and PropertyCalc.site.
PropertyCalc.site's answer:
PropertyCalc focuses exclusively on UK property and finance calculations with a clean, no-nonsense interface. No sign-up, no ads cluttering the page, no trying to sell you a mortgage. Just fast, accurate calculators updated for the latest tax rates.
PropertyCalc.site's answer:
Most UK calculator sites are either cluttered with ads, require you to sign up, or are run by mortgage brokers trying to capture your details. PropertyCalc is completely free with no registration, loads fast on any device, and gives you the numbers without the sales pitch.
PropertyCalc.site's answer:
UK first-time buyers working out stamp duty and mortgage costs, homeowners remortgaging, landlords calculating rental yields, and anyone wanting a quick take-home pay estimate. Basically anyone making property or financial decisions in the UK.
PropertyCalc.site's answer:
Built out of frustration with existing UK property calculators that were either outdated, full of ads, or designed to funnel you into a mortgage application. PropertyCalc was created to be the simple, reliable tool that should already exist.
PropertyCalc.site's answer:
HTML, CSS, and JavaScript. Static site hosted on Netlify for fast load times. No frameworks, no bloat — just lightweight pages that load instantly.
Share your experience with using DeveloperTools.Tech and PropertyCalc.site. For example, how are they different and which one is better?
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