Ideas, tools, and creative exploration
Interactive tools, games, simulators, labs, and code libraries — all built from scratch.
Calculators, converters, generators, and productivity utilities.
ExploreClassic and puzzle games — play directly in the browser.
ExplorePhysics, algorithms, and systems visualization.
ExploreStep-by-step labs on programming concepts and data structures.
ExploreCode snippets and reference material by language.
ExploreEngineering deep-dives, dev patterns, and software craftsmanship.
ExploreMost-used utilities by the community.
Full scientific calculator with trigonometry, logarithms, powers, memory, and calculation history.
Create bar, line, pie, and donut charts from your data, download as PNG.
Design custom logos with text, shapes, images, 36+ fonts, rotation, undo/redo, and export as PNG or SVG.
Generate Code128, EAN-13, and UPC-A barcodes from text or numbers.
Calculate your exact age in years, months, days, hours, and find your next birthday countdown.
Toggle Unix file permission bits and get the numeric and symbolic chmod notation instantly.
Jump into a quick game — no downloads needed.
Fill the entire board with one color in as few moves as possible!
Aim and shoot bubbles to match colors and clear the board!
Color the map using only 4 colors — no two adjacent regions can share a color!
Aim and click to shoot ducks flying across the sky!
A strategic solitaire game — all cards are visible from the start!
Run, jump, and duck through an endless obstacle course!
Interactive visualizations for physics, algorithms, and systems.
Explore cellular automata — watch simple rules create complex, emergent patterns.
Watch sorting algorithms in action with colorful animated bar charts.
Simulate CPU scheduling algorithms — FCFS, SJF, Round Robin, and Priority scheduling.
Watch packets traverse a network graph using different routing algorithms.
Visualize recursive function call trees for Fibonacci, factorial, and more.
Visualize push, pop, enqueue, and dequeue operations on stacks and queues.
Step-by-step educational experiences to level up your skills.
Visualize singly and doubly linked lists — insert, delete, search, and traverse nodes interactively.
Understand RGB, HSL, and hex colors — build palettes and explore contrast with interactive pickers.
Master map, filter, reduce, and more — transform arrays with live code exercises and visual diagrams.
Learn JSON syntax, parse and build data structures, and explore how REST APIs work interactively.
Watch Bubble Sort, Selection Sort, and Insertion Sort in action with animated bar charts.
Learn to query databases with SQL SELECT — filter, sort, and transform data interactively.
Curated code snippets and reference material by language.
A comprehensive zero-dependency PHP utility toolkit with 80+ helper methods for strings, arrays, dates, validation, security, HTTP, and file operations.
A zero-dependency PHP library providing 6 typed data structures with 60+ methods: Stack, Queue, Collection, Set, TypedArray, and Pair.
A zero-dependency PHP library implementing 6 advanced software patterns with 50+ methods: Pipeline, Result, EventEmitter, Container, Retry, and CircuitBreaker.
A zero-dependency CSS utility toolkit with 70+ utility classes, animations, pure-CSS components, and a design-token system for layout, typography, effects, and responsive design.
Fresh content, straight from the keyboard.
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In this tutorial, we're going to create a simple Python project using Visual Studio Code (VS Code). We'll be building a program that takes user input and prints…
Visual Studio Code (VS Code) is a popular source code editor developed by Microsoft. It's lightweight, free, and supports a variety of programming languages. Th…
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