Browse Apps

Convert tables between CSV, Markdown, SQL, and HTML formats instantly. Paste data in any format, edit it in a spreadsheet-like form, and export to the format you need.

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

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

A stunning cyberpunk-style interactive periodic table with 3D electron orbital visualizations and element heatmaps.

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.

Convert Excel spreadsheets to Markdown right in your browser. Drop an .xlsx file and get clean tables, text, and images as Markdown — all processed locally, nothing uploaded.

A collaborative platform where developers worldwide can showcase and discover diverse coding projects across web development, mobile apps, machine learning and more.

JavaScript API client library for Passky password management services. Provides developers with tools to integrate password management functionality into web applications.

Personal budget dashboard with interactive charts, income and expense tracking, and real-time balance calculations.

Calculate pace, finish time, or distance for running and cycling. Includes mile/km splits table, preset race distances, and imperial/metric support.

Classic 8-ball billiards with realistic physics. Aim, set your power, and sink all your balls before your opponent.

A score tracking leaderboard. Add players, submit scores, and see rankings update in real time. Great for game nights.

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

Find your exact age in years, months, and days from any date.

How many runs until you get the drop? Enter any drop rate and see exactly how many attempts you need for 50%, 90%, or 99% confidence.

Interactive visualizations of 40+ data structures and algorithms — trees, heaps, graphs, hash tables, sorting, and more. A classic CS education resource.

Browse a mouth-watering menu, explore dishes by category, and place orders in this beautifully designed food ordering experience.

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

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

Calculate how your savings grow over time with compound interest.

Track time spent on tasks with a simple start/stop interface and local storage.

A lightweight web spreadsheet with formulas, cell formatting, merge, freeze panes, and multiple sheets. Excel-like editing in the browser.

Test your knowledge of JavaScript's tricky == operator. Fill in the equality table by guessing which comparisons return true — a fun challenge for developers.

A JavaScript UCI chess engine that you can play against or analyze chess positions with. Features configurable difficulty and move analysis.