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Study 3,600+ chess openings on an interactive board. Search by name or ECO code, step through moves, bookmark favorites, and track your study progress.

by Launch Arcade

Browse 319 spells and 334 monsters from the D&D SRD. Filter by class, level, school, creature type, and challenge rating. Save spell lists for your characters and share builds with the community.

by Launch Arcade

Search any country and get travel info at a glance -- population, currency, languages, and more. A quick reference for planning your next trip.

by natasha-mann

Explore all 118 elements with a beautiful glassmorphism periodic table. Search, filter, and learn about each element.

by independent-coder

A page displaying every standard HTML5 element. Great for testing CSS themes, browser rendering, and learning HTML5 tags.

by cbracco

Interactive periodic table of 118 elements. Color-coded by category, filterable by phase and type. Click any element for detailed properties: atomic mass, density, melting/boiling points, electron configuration, and more.

by Launch Arcade

See public holidays across 202 countries on a visual calendar. Click any date to see which countries are celebrating. Great for scheduling across time zones.

by stryfe359

Browse all 386 Gen 1–3 Pokémon. Search by name, filter by type or generation, and tap any card to see full stats.

by Launch Arcade

Browse and search through a collection of creatures. View stats, types, abilities, and evolution chains in a clean visual interface.

by AM1CODES

On-screen measurement tool with rulers in centimeters, millimeters, inches, and feet. Calibrate to your display.

by samyakrajbayar

Interactive celestial map showing stars, constellations, and planets. Pan, zoom, and explore the night sky.

by ofrohn

Tune any instrument with this precise chromatic tuner. Uses your microphone to detect pitch in real time.

by qiuxiang

A browser drum machine and beat sequencer. Program grooves, record patterns, and export your beats as JSON.

by pemmyz

Picture logic puzzle game with dark and light themes and saved progress.

by Launch Arcade

A browser-based spreadsheet app inspired by Excel. Create cells, enter formulas, format data, and work with multiple sheets.

by kishanrajput23

A reactive notepad calculator. Type math expressions and see results instantly — supports variables, functions, and unit conversions.

by grimalschi

A curated guide to psychology and mental health resources. Browse articles, tools, and techniques for stress management, anxiety relief, and emotional wellness.

by rajawatneeshu

A real-time browser guitar tuner using your microphone. Detects pitch and shows whether each string is in tune.

by jbergknoff

Configurable multiple-choice quiz engine with scoring and feedback.

by google

Count characters, words, and bytes in your text instantly. Supports Korean character counting rules used in the NEIS education system.

by hjh010501

A powerful QR code toolkit — analyze, decode, and recover damaged QR codes step by step. See the internal structure, edit modules, and extract data from partial codes.

by Merricx

A bundle of puzzle games and image tools — play jigsaw puzzles and caro, plus crop, split, and resize images. All in one slick web app.

by TranHuuDat2004

Interactive animated periodic table of elements. Click any element for detailed information including atomic weight, electron configuration, and more.

by Naveen Kumawat

A daily roguelike adventure you can play right in your browser. Explore procedurally generated dungeons, fight monsters, and collect loot.

by kesiev