
Tailwind UI
FlowBite
DaisyUI
Preline UI
TailGrids
v0.dev
Keep Design System
Beautiful and responsive UI components and templates for React and Vue with Tailwind CSS.

Numara Calculator
SpeedCrunch
Qalculate!
Numi App
Soulver
Numby
Engineering Equation Solver
Calculate in a notebook and share — from everyday math to engineering.

Which is more popular?
Based on our record, Float UI seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | floatui.com | calcumber.app |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Switzerland · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


Float UI is a platform that allows users to create modern websites without requiring design knowledge. The platform is open source and free, making it accessible to everyone. It includes a collection of responsive user interface components and website templates with modern designs, making it easy...
Use variables, functions, and units and see results immediately. Add comments, copy calculations to apps like Word or Excel, or share them through an editable link. Calculate thermodynamic fluid properties with the integrated CoolProp library.
What each product offers, as listed by its team.


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


As answered by people managing Float UI and Calcumber.
Calcumber's answer:
Calcumber's answer:
Calcumber's answer:
When starting for a Master of Advances Study in Energy Systems, I was looking for a suitable state-of-the-art calculator. Then I built my own Calculator Calcumber and now the Eastern Switzerland University of Applied Sciences is using Calcumber for teaching students in thermodynamics.
Calcumber's answer:
Calcumber's answer:
HTML, CSS, TypeScript, PWA, CoolProp
Calcumber's answer:
Share your experience with using Float UI and Calcumber. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


React developers can quickly create websites and web applications with Float UI, a collection of interactive UI components and elements. A beautiful website can be created with Float UI because it uses pure React,...
We have no reviews of Calcumber yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Tailwind by default does not give you any components to work with, except if you use TailwindUI, which is quite expensive. But if you want a free component library, you can use FloatUI. - Source: dev.to / over 2 years ago
Float UI - free web development tool for quickly creating modern, responsive websites with sleek design, even for non-designers. - Source: dev.to / over 2 years ago
I have used Radix UI a lot, and built a library using it like Float UI and PH clone, and it’s cool tbh. Source: almost 3 years ago
Tracking Calcumber since Jul 2026.
When comparing Float UI and Calcumber, you can also consider the following products.

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A simple but powerful notepad calculator which evaluates expressions as you type.
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Build UI interfaces and simplify the process of integrating into live websites with Tailwind CSS
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SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .
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Qalculate! is a multiplatform multi-purpose desktop calculator.
Compare Qalculate! to Float UI or Calcumber: