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Looking for something like QR is cool? Here are 16 web apps from the same corner of the catalogue.

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QR is coolUtilities

QR is cool is an interactive demonstration of the error correction built into every QR code.

More in Utilities(top 12)

BreezePDF

Privacy-first PDF editor in browser

AudioMass

Full multitrack audio editor for web

NewOpen SourcePWA

🎲Unsure Calculator

Unsure Calculator

Probabilistic back-of-napkin calculator

calculatoruncertainty

🔧Ancient Earth globe

Ancient Earth globe

Earth looked very different long ago.

NewOpen SourceAI Powered

🔧This page is a truly naked, brutalist html quine.

This page is a truly naked, brutalist html quine.

This page is a truly naked, brutalist HTML quine

markdowndata-tools

Droplets

Simply Chris

x86CSS

X86CSS – An x86 CPU emulator written in CSS

PrintMap

Free map poster maker — design a custom map of any place, 22 styles, your colours, routes and 3D terrain.

editordata-tools

Pole Clock

Pole Clock is a beautiful 24-hour analog clock that displays all timezones on a single dial.

next.jsdata-tools

Babel

Every language of Wikipedia, building one tower together.

🔧Your Social Media Fingerprint

Your Social Media Fingerprint

Without your consent most major web platforms leak whether you are logged in.

trains.fyi

Live positions for passenger trains around the world.

next.jsdata-tools

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💰Forecast Planner

Forecast Planner

Forecast future cash flow, not past spending

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💰Calquio Compound Interest

Calquio Compound Interest

Interactive compound growth calculator with contributions

NewAI PoweredPWA

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tweakcn

Theme editor and generator for shadcn/ui

⚡Bento Slides

Bento Slides

Entire PowerPoint in one HTML file

NewOpen SourceAI Powered

presentationsslides