Software Engineer

Ahmed Habib
builds things that ship.

464 tools, apps, games and experiments — every one of them finished, free, and running in your browser with nothing to install.

I care about software that stays working: no build steps to rot, no dependencies to patch, no accounts to create. This is where I put the things I build and write down what they taught me.

Read the writing Explore the work
301
Tools
90
Games
35
Labs
21
Apps
13
Simulators
4
Libraries
10
Articles

Writing

Engineering notes, worked examples, and things I got wrong first.

Technology 5 min

Your View Counter Is Lying to Google

A view counter plus ON UPDATE CURRENT_TIMESTAMP makes dateModified change on every page load. How to spot it in 30 seconds, why it matters, and three fixes.

Tutorials 6 min

Lessons From Building Digital Creations

Five lessons from shipping 460+ tools, games, labs and simulators — including the constraint that mattered most and the one I enforced far too late.

Technology 5 min

Creating 300+ Free Browser Tools: My Journey

What I learned building 301 browser tools across 18 categories: the architecture that made it sustainable, the rules I follow, and the ones I got wrong first.

All articles

The work

Everything here is built from scratch and runs client-side. No sign-up, no upload, no data leaving your browser — which is also why it all stays free.

301

Tools

Converters, calculators, generators and encoders across 18 categories.
21

Apps

Larger utilities built to install as PWAs and work offline.
90

Games

Arcade, puzzle, strategy and word games that run in a tab.
35

Labs

Interactive lessons on programming concepts and data structures.
13

Simulators

Physics, algorithms and systems, visualised and adjustable.
4

Libraries

Downloadable code and reference material, organised by language.

Most used

What people actually reach for, across everything.

9-Slice / 9-Patch Generator

Slice images into 9 pieces for scalable UI elements.

Tool 1,020
🖨️

Print Layout Studio

Duplicate and tile images onto print sheets with bleed, crop marks, flexible measurement units, image adjustments, and print-ready export.

App 727
🗂️

PHP Data Structures

A zero-dependency PHP library providing 6 typed data structures with 60+ methods: Stack, Queue, Collection, Set, TypedArray, and Pair.

Library 702
🎨

CSS Essentials

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.

Library 694
⚙️

PHP Advanced Patterns

A zero-dependency PHP library implementing 6 advanced software patterns with 50+ methods: Pipeline, Result, EventEmitter, Container, Retry, and CircuitBreaker.

Library 665
🧰

PHP Essentials

A comprehensive zero-dependency PHP utility toolkit with 80+ helper methods for strings, arrays, dates, validation, security, HTTP, and file operations.

Library 658
🎨

Color Flood

Fill the entire board with one color in as few moves as possible!

Game 621
🔧

Pipe Connect

Rotate pipe segments to connect the water flow from start to end!

Game 619
⭐

Image Tracing Studio

Professional-grade raster-to-vector image tracer with Potrace-quality Bezier fitting, CIELAB color quantization, and near-zero-miss validation.

App 598

New work, occasionally

An email when something is published — a new article, or a tool worth knowing about. No schedule, no marketing, one click to leave.

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Most read

01

Building Your First Python Project in VS Code: A Beginner's Guide

Tutorials 6 min
02

Quick Guide to Installing Linux as an Alternative to Windows

Tutorials 7 min
03

How to Use Visual Studio Code for Beginners

Tutorials 6 min
04

A Practical Guide to Using ChatGPT and Gemini for Everyday Tasks

Tutorials 6 min
05

Gemini vs ChatGPT: A Detailed Comparison

Technology 5 min
ESC