Ideas, tools, and creative exploration
Interactive tools, games, simulators, labs, and code libraries — all built from scratch.
Advanced utilities — logo makers, planners, and more. PWA-ready.
ExploreCalculators, 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.
ExploreAdvanced utilities — installable as PWA for desktop-like experience.
Professional-grade raster-to-vector image tracer with Potrace-quality Bezier fitting, CIELAB color quantization, and near-zero-miss validation.
Browser-based flowchart and diagram editor with 10 node types, orthogonal connection routing, snap-to-grid, and PNG/SVG/JSON export.
Professional print preparation tool for imposing, arranging, and preparing documents for printing. Supports PDF and image uploads, multi-up layouts (1/2/4 per side), duplex printing, banner overlays, page numbering, crop marks, and batch PDF export.
Professional image enhancement with auto-enhance, AI face detection, healing brush, color grading LUTs, batch processing, and 40+ tools for quality improvement.
Professional resume and CV builder with 6 templates, drag-to-reorder sections, live preview, and PDF/PNG/HTML export.
Professional logo design studio with 50+ fonts, 20 shapes, image filters, gradient fills, save/load projects, and export as PNG, JPEG, WebP, or SVG.
Most-used utilities by the community.
Full scientific calculator with trigonometry, logarithms, powers, memory, and calculation history.
Design custom logos with text, shapes, images, 36+ fonts, rotation, undo/redo, and export as PNG or SVG.
Create bar, line, pie, and donut charts from your data, download as PNG.
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!
Aim and click to shoot ducks flying across the sky!
Color the map using only 4 colors — no two adjacent regions can share a color!
A strategic solitaire game — all cards are visible from the start!
Tap to fly through the pipes — a simple but addictive arcade challenge.
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.
Insert, search, and delete nodes in a binary search tree with real-time visualization.
Build and run finite state machines — define states, transitions, and test input strings.
Visualize hash table insertions, lookups, and collision resolution strategies.
Step-by-step educational experiences to level up your skills.
Visualize singly and doubly linked lists — insert, delete, search, and traverse nodes interactively.
Master map, filter, reduce, and more — transform arrays with live code exercises and visual diagrams.
Understand RGB, HSL, and hex colors — build palettes and explore contrast with interactive pickers.
Learn JSON syntax, parse and build data structures, and explore how REST APIs work interactively.
Explore JavaScript variables, data types, and type coercion through interactive code exercises.
Watch Bubble Sort, Selection Sort, and Insertion Sort in action with animated bar charts.
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 CSS utility toolkit with 70+ utility classes, animations, pure-CSS components, and a design-token system for layout, typography, effects, and responsive design.
A zero-dependency PHP library implementing 6 advanced software patterns with 50+ methods: Pipeline, Result, EventEmitter, Container, Retry, and CircuitBreaker.
Fresh content, straight from the keyboard.
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