Browse all apps

A full-featured online Markdown editor with syntax highlighting, live preview, and auto-save. Write documents with a clean, dark-themed interface.

by devhau

A beautiful Markdown and HTML editor that lets you write rich text with live preview. Switch between Markdown, HTML, and WYSIWYG modes seamlessly.

by bevacqua

A minimal, single-page Markdown editor with instant live preview. Toggle between editor and preview on mobile, or use the side-by-side layout on desktop.

by RiedelNicolas

A full-featured Markdown editor with live preview, syntax highlighting, and export. All processing happens in your browser.

by ThinkerDan

A cross-platform notes app with rich text editing, cloud sync, folders, search, and sharing. Create, organize, and access your notes from any device.

by Launch Arcade

A tiny, elegant code editor for the browser with syntax highlighting. Write and edit code in a clean, minimal interface.

by kazzkiq

Define states, symbols, and transitions, then watch a Turing machine execute step by step.

by VittGam

Create music from math — write tiny formulas that generate audio in real time. A bytebeat player for composing algorithmic music with just a few characters of code.

by BSquareII

A programming puzzle game. Write JavaScript to control a building elevators and transport passengers as efficiently as possible.

by magwo

A live GLSL fragment shader editor with instant preview. Write WebGL shaders and see the results in real-time on a canvas.

by patriciogonzalezvivo

Write HTML, CSS, and JavaScript with instant live preview. A lightweight CodePen-style editor in your browser.

by ItzBlueSword

Draw tarot cards, explore their light and shadow meanings, and keep a personal reading journal. Single card and three-card (Past, Present, Future) spreads with all 78 cards.

by Launch Arcade

Learn the alphabet with animals! Each letter features a colorful animal card, letter tracing with your finger, and celebration animations. Progress saved to the cloud so kids can pick up where they left off.

by Launch Arcade

Create the perfect ambient soundscape for studying with mixable sound layers, task-based presets, and a built-in Pomodoro timer.

by jstnpbl

Turn JavaScript code into draggable bookmarklets instantly. Paste your code, get a ready-to-use bookmarklet link you can drag to your browser toolbar.

by caiorss

Offline learning platform for creating and studying interactive capsules with notes, flashcards, and quizzes. All data stays in your browser.

by nargesyaghoubi

An elegant browser-based command-line console. Type commands, see output, and build interactive terminal-style experiences in the browser.

by 1j01

Simple browser notepad that saves your notes to local storage automatically.

by s3131212

An open-source puzzle game editor and engine. Design, build, and play tile-based puzzle games right in the browser.

by increpare

A browser-based Choose Your Own Adventure engine. Play through branching stories or create your own interactive fiction — no coding required.

by McFunkypants

An interactive graphing tool for visualizing and animating mathematical concepts like linear transformations and matrix operations.

by soerenfriese