Utilities Apps

QR code generators, unit converters, password generators, URL shorteners, and everyday micro-tools.

115 apps

Utilities

BreezePDF

Privacy-first PDF editor in browser

AudioMass

Full multitrack audio editor for web

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High QualityOpen Source

audioeditor

Utilities

Unsure Calculator

Probabilistic back-of-napkin calculator

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High Quality

calculatoruncertainty

Utilities

WalletWallet

Create Apple Wallet passes from anything

Channel Surfer

Watch YouTube like old-school cable TV

modembin

Like pastebin, but it screams at you in modem.

The Quiet Map

A live map of the quietest place on Earth, refreshed hourly.

printme.money: how fast do you print money?

enter your salary.

Ancient Earth globe

Earth looked very different long ago.

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three.jscolor

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

Utilities

This page is a truly naked, brutalist html quine.

This page is a truly naked, brutalist HTML quine

Droplets

Simply Chris

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Utilities

x86CSS

X86CSS – An x86 CPU emulator written in CSS

Geo Traceroute

Online geolocalized visual traceroute

PrintMap

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

AdhanLive: Live Islamic Prayer Map, Prayer Times and Qibla Finder

A live 3D globe showing the Adhan sweeping across 280,621 mosques in real time.

Pole Clock

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

Babel

Every language of Wikipedia, building one tower together.

jim-fx's

Simulate 3D plants in the browser

Your Social Media Fingerprint

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

How Did I Get Here?

A cool-as-shit dynamic traceroute powered by custom software, married with an informative article about how the BGP r...

trains.fyi

Live positions for passenger trains around the world.

touch grass

I built an app to stop me doomscrolling by touching grass

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ai-powered

🔧CricCode : A fake VS code, so you can browse live cricket score in your office.

Utilities

CricCode : A fake VS code, so you can browse live cricket score in your office.

I built a fake VS Code to browse live cricket score in office

ShadeMap

Every mountain, building and tree shadow in the world simulated for any date and time

1fps.video

1-FPS encrypted screen sharing for introverts

Feed me up, Scotty!

RSS feeds for arbitrary websites, using CSS selectors.

What every Browser knows about you

This is a demonstration of all the data your browser knows about you.

Trail Router

Running route planner for round-trips amongst greenery

ksynth

What if your synthesizer was powered by APL (or a dumb K clone)?

Read Hacker News on Kindle

Read Hacker News discussion on your Kindle.

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next.jsdata-tools

🔧Horizon at 32.70816, 35.32469

Utilities

Horizon at 32.70816, 35.32469

The current sky at your approximate location, rendered as a CSS gradient.

Archivarix Tube Search

Find deleted YouTube videos using the Wayback Machine and Common Crawl.

Search Books from OpenLibrary with Typesense

Books Search with Typesense

ReMemory

A digital safe with multiple keys, held by people you trust.

time.fyi

Timezone converter and world clock by time.fyi is a simple, fast and easy to use app to convert timezones and check t...

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reactastro

🔧Which bike tire fits my bike?

Utilities

Which bike tire fits my bike?

Which tire fits my bike?

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colorapi

🔧UDP-7777 // THE SIGNAL

Utilities

UDP-7777 // THE SIGNAL

A pager

Create high-definition, visually stunning QR codes

Create high-definition, visually stunning QR codes by controlling QR pixel placement to preserve intricate details.

MarkdownDown

I made a tool to clean and convert any webpage to Markdown

Wavacity

Wavacity is a port of the Audacity audio editor to the web browser.

Deal With It GIF emoji generator

I built the most over-engineered Deal With It emoji generator

Taylor Detector

Wondering if a product is made by Taylor Farms?

Modern for Wikipedia

A beautiful, clean, modern web UI for Wikipedia.

ridealong

Board a live London Tube train and ride it through a 3D London.

Photo editor online for free

Photo edit online for free, resize, and filter any photos, convert image to jpg/png/jpeg/webp, take a screenshot in a...

Population Rays

How far must a 5° slice go in each direction before it hits N people?

Diena

The timeline of everything

Flight Viz

Track 10,000+ flights in real-time on an interactive 3D globe.

Time Flies

A visualization of the passage of time using flies.

🛰️ See A Satellite Tonight

Satellites 🛰️ are visible in the night sky, no telescope required, if you know where to look.

AudioMass

AudioMass is a free full-featured web-based audio & waveform editing tool

Zanagrams

Zanagrams is a free daily word puzzle.

Audiocube

Audiocube is is a 3D DAW - an application for composing, designing, and creating sound in a virtual acoustic environm...

Compare counties

A live choropleth of UK petrol and diesel prices by county and unitary authority.

DWS

DWS OS, a Plan 9 Inspired Web “OS”

ncube

Visualize rotating objects from the 4th, 5th, nth dimensions

Library of Babel

Browse, explore, and search a complete re-creation of Jorge Luis Borges

NYC Subway Rat Detector

We asked subway riders.

New app! A compass that points to the centre of the galaxy (Interconnected)

Galactic Compass – an app that points to the galactic center

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astroapi

🔧WebGL Gaussian Splat Viewer

Utilities

WebGL Gaussian Splat Viewer

Real-Time 3D Gaussian Splatting in WebGL

Freeport

Freeport is a decentralized peer-to-peer marketplace for rides, services and goods.

Release 01 Explorer

A classic-OS-inspired public disclosure shell for browsing war.gov/UFO Release 01 by folder, source, date, location, ...

Tuner Scope

Web App Uses RTL-SDR to Align HDTV Antenna

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🔧ikea complexity index

Utilities

ikea complexity index

IKEA Complexity Index

RetroTick

Run classic Windows and DOS executables directly in your browser.

Online Video Editor (No Upload, No Signup)

Free online video editor that runs in your browser.

Seafloor

Interactive 3D globe visualizing seven years of EU shipping emissions data (2018–2024) from THETIS-MRV.

CalcBin

Free online calculators, converters, and utility tools.

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next.jseditor

🔧Walk Time Population Calculator

Utilities

Walk Time Population Calculator

Find out how many people live within a 5 to 60 minute walk of any point in the US, with population, income, and demog...

Passport Globe

See where your passport(s) can take you.

Parrot: Throwaway Audio Recorder, by ZKHRV

Parrot is a web app for easily recording throwaway audio clips.

Git Commit History Visualizer for GitHub

Visualize a GitHub repository

Wikigraph

An interactive visualization of all of English Wikipedia.

WhyThere

Compare cities side-by-side with data on rent, home prices, weather, safety, walkability, schools, parks, and lifesty...

Find The Fuckup

Contract Error Checker

The Record

Enter your birth date and see every major world event that happened in your lifetime.

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data-toolscolor

🔧York, England, United Kingdom Weather Forecast - brolly.sh

Utilities

York, England, United Kingdom Weather Forecast - brolly.sh

Plain-text weather forecast for York, England, United Kingdom.

CADara

CADara – I made an open-source in-browser CAD

offline.church

I made a website you can only visit in airplane mode

Neo Gear

Generate precision involute gears with real-time 3D visualization.

SynapTale

SynapTale reads a story chapter by chapter and remembers every person, promise, and secret — powering translations th...

nostalgia

Nostalgia — make a desktop for someone.

Eulumdat Editor

LDT/IES Photometric File Editor

Instant folder sharing

Animal Crossing Letter Generator

A pixel-perfect editor for writing letters like in Animal Crossing New Horizons!

Boxsert

Design custom boardgame box inserts and storage that you can build with foamcore or cardboard.

bikemap.nyc

Visualization of the entire history of Citi Bike, the largest bike-sharing system in the US.

Gnoke Station

Gnoke Station - The Ultra-Lightweight Industrial Desktop Environment by edmundsparrow

News Map

See news articles visualized on a world map, discover relevant top news articles of today.

CryMaps

Find Your Spot

FFmpegs Pages

Free FFmpeg Pages online tool for media processing.

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data-toolscolor

🔧JuliaScope: The Fractal Graphing Calculator

Utilities

JuliaScope: The Fractal Graphing Calculator

Beyond Z²+C, Plot Any Fractal

Rent RAM by the Day

RamBnB

GeoSpot Explorer

I embedded 10M StreetView images

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data-toolscolor

🔧Multi-track Web Audio Editor

Utilities

Multi-track Web Audio Editor

Waveform Playlist

AutoRoaster

Modern Data Science for Coffee Roasting

Touched Grass: Free X (Twitter) Badge Generator

Create a free badge for your X profile, share it with your audience, and prove you've touched grass—or earned another...

BDZ Map

BDZ Map · БДЖ карта - проследяване на влакове в България в реално време.

Voice Composer

Voice Composer - Sing to MIDI

QuickClip

A cross-device clipboard manager that syncs copied text, links, and images instantly.

RacketMeter

Racketmeter is the easiest way to measure badminton racket string tension using the mic on your device.

YouTube Ad Blocker

Watch YouTube without ads using SkipCut YouTube Ad Blocker.

The Enigma Project

Explore the legendary WWII Enigma machine through an innovative 3D interactive experience.

Development

Interactive NACA airfoil generator and visualizer.

ClipJS

A free online video editor that enables you to edit videos directly from your web browser.

Life in Weeks

Create a beautiful, rich timeline of your life in just minutes.

hackernews.life

Hacker News as a Primordial Soup

Chilly ATC

Blend live ATC with ambient music for deep focus

Import, Query, and Visualize Raw Data

TextQuery

QR is cool

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

String Simulation

Web Audio Spring-Mass Synthesis

Silence Slicer: Private AI Video Editor

Edit video by text with our private AI video editor.

Screen Now

Create Beautiful Screen Recordings without leaving your browser.

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data-toolsapi

🔧TI 84 plus calculator Online

Utilities

TI 84 plus calculator Online

Free TI-84 online calculator simulator.

Pixel art weather

Simple ad-free weather site featuring pixel art TV channels

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data-toolsimage