Coauthor supercollaboration/discussion forum

Cocreate Shared Whiteboard/Drawing

Multiroom meeting app integrating web tools

Tool for drawing diagrams on a grid, combining grids of SVGs into a big SVG figure

FOLD file format for origami models, crease patterns, etc.

CoffeeScript for Python programmers (a guide)

"Every Author as First Author" paper from SIGTBD 2023, about superimposing author names in a stack

Tetris Font

The Open Problems Project

docker-compose.yml for running open-source Kadira

Crease pattern editor

Better LaTeX that compiles to LaTeX

Ancestor/descendant tree from Mathematics Genealogy Project, rendered to HTML

Backup Slack users, channels, and messages for conversion to Discord

Template for RevealJS talk slides using Pug, KaTeX, Stylus, CoffeeScript, SVG Tiler, SVG.js

Computer-aided design of blown glass, specifically glass cane

Integrating SolidJS and Meteor reactivity

Simple conversion from LaTeX to ASCII or Markdown

Efficiently convert SVG files to PDF and/or PNG via Inkscape

Software for better online synchronous meetings and classes

Simple demo of SolidJS in Meteor

QR codes with images, built by stacking layers of material

No description.

Website for Computers and Intractability: A Guide to Algorithmic Lower Bounds

Realtime WebGL origami simulator

PokeTree: Binary Search Trees with Pokémon

Computational Geometry Playground

Yin-Yang CCCG 2021 talk

Custom level design for Recursed via spreadsheets

Counterexamples to conjecture that a magnet outside a polygon can grab a metal ball inside a polygon

Customize replacements in markdown-it typographer

Python to CoffeeScript automatic converter

Framework for webapps demoing JavaScript-rendered fonts

See all your babies' data from Nara Baby tracker app

Template for Civet + SolidJS projects built by Vite

Timer/countdown web app

Prototype GUI for interactive SVG Tiler drawing

Testing GitHub's new math formula support

Unfancy JavaScript

Erik Demaine's GitHub profile

Algorithmic Character Layout

Tiling with Three Polygons is Undecidable

n^2-1 sliding squares puzzle

Meteor compiler plugin for SolidJS including SSR

Grep for text in PowerPoint

Word Ladder Designer

Impossible Folding Font

Transfer followshows.com history to trakt.tv

Curved crease pattern drawing program

Cube Folding Font

Remember form state (and other state) in URL

Dead-simple spell checking in CodeMirror

Template for Astro site using Civet programming language to write Solid components

Extends Meteor Collections to handle file data using MongoDB gridFS.

As-Toroids: Higher-Genus Asteroids

No description.

Slides for talk about Hardness of Token Swapping in Trees

Tampermonkey scripts to bring (extra) dark modes to various websites

Short Chess (4x8, 5x8, ...) Mate Search

The interdicplinary of Mathematics and Computer Science, Distinguisehed by its emphasis on mathemtical technique and rigour.

Voronoi Font

Count number of papers and coauthors via DBLP

Orthogonal Fold & Cut Font

Yin-Yang font

Spiral Galaxies Font

accounts-ui package with Bootstrap 3 and localization support

Better Python

✉️ Send e-mail with Node.JS version 4

Coin-sliding font puzzles app

Convert Apache server-side rendered HTML to static HTML

Attendance measurement for Comingle meetings

NPM version of Meteor Tracker

Talk about Puzzle Fonts about Puzzles

Render static .pug files as static HTML in Meteor

Yin-Yang puzzles and hardness figures via SVG Tiler

Lightweight coding agent that runs in your terminal

USB-UIRT CLI for sending/learning IR codes

Modular arithmetic demos

Review-first terminal diff viewer for agentic coders

Client implementation of the Language Server Protocol for Sublime Text

Custom markdownlint rule for checking internal links like those generated by Github

Reproduction of unplugin issue when webpack virtual modules use relative imports

LaTeX grammars for Visual Studio Code

Strip Folding Font

Ada Font

Small javascript library/function to prettify XML

BibTeX style for overriding alphabetic labels

ORIPA is a drawing software dedicated to designing the crease patterns of origami. The unique feature of ORIPA is calculation of the folded shape from the pattern.

Path Puzzles Font

Juggling Font

A javascript-only SVG to PDF conversion utility that runs in the browser. Brought to you by yWorks - the diagramming experts

Mark visible nav items in logarithmic time

No description.

The definite Conway's Game of Life implementation in your browser. Features an infinite field & Hashlife

Babel plugin to annotate CJS modules with what they require

Bust-a-Move / Puzzle Bobble clone, in particular for illustrating NP-completeness

Use SolidJS components in Meteor Blaze templates

Slides for talk about Token Swapping and Robot Pivoting

Meteor smart package for transparently adding ShareJS editors to an app

🗞️ A Netlify template for LaTeX projects.

Formal proof of undecidability of Wang tiling

Python package to generate edX "drag and drop" problems from latex, complete with XML and images

npx ccusage

Demo of text and image gen via TanStack AI with bring-your-own-key OpenRouter

🤖 Type-safe, provider-agnostic TypeScript AI SDK for streaming chat, tool calling, agents, and multimodal apps across OpenAI, Anthropic, Gemini, React, Vue, Svelte, and Solid.

Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

Node.js JavaScript runtime ✨🐢🚀✨

The repository for high quality TypeScript type definitions.

Create a subset of a TrueType/OpenType/WOFF/WOFF2 font using the wasm build of harfbuzz/hb-subset

Defines a common protocol for language servers.

Simulates a card-based zero-knowledge proof for Push Merge and other reconfiguration problems on asynchronous cellular automata.

The open source coding agent.

Boost LaTeX typesetting efficiency with preview, compile, autocomplete, colorize, and more.

The Website and web infrastructure for learning TypeScript

Unified plugin system for Vite, Rollup, Webpack, esbuild, and more

Browser compatibility data for Web technologies as displayed on MDN

The content behind MDN Web Docs

A highlight.js language grammar for the Lean theorem proving language.

Civet language support for Meteor

Example Meteor app in Civet language

Template for LaTeX paper with GitHub Action to automatically compile to PDF

Erik's starting point for writing papers with LaTeX

Reproduction of unplugin issue when rspack virtual modules use relative imports

💮 amazing QRCode generator in Python (supporting animated gif) - Python amazing 二维码生成器（支持 gif 动态图片二维码）

VSCode extension to integrate eslint into VSCode

No description.

Migrate github issues, pull requests and comments from any github source to any other github target. Works with history rewriting.

Adds static typing to JavaScript to improve developer productivity and code quality.

Flow for Visual Studio Code

A Fine-Grained Runtime for Performant DOM Rendering

Cumulative documentation for SolidJS and related packages.

Solid Docs, rehauled. Very much in progress

No description.

A simple integration to run solid-js with vite

JavaScript implementation of the "accept" attribute for HTML5 input element

No description.

Tatamibari Font

Sudoku Font

Integer Sequence Font

A template for Solid using the Civet language (a compile to JS language)

Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.

No description.

Software to compute and analyze flat-folded states of crease patterns

The fast, flexible, and elegant library for parsing and manipulating HTML and XML.

No description.

SolidStart, the Solid app framework

Fonts used by KaTeX and scripts to generate fonts

Meteor support for SolidJS (Solid hackathon submission)

Template for Reveal.js slides using Pug templating with Stylus and CoffeeScript filters

Elegant parsing expression grammars

A template for Solid Start using the Civet language (a compile to JS language)

The CoffeeScript of TypeScript

Render Preact VDOM directly to DOM/xmldom/jsdom

Library of developer tools for debugging and visualizing SolidJS reactivity.

The cmd-shim used in npm

Erik Demaine's GitHub settings

2048 Without Merging: a demo illustrating a paper motivated by a game

A universal router for Solid inspired by Ember and React Router

A repository for collecting SolidHack submissions.

Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

An experimental repository for exploring DSL ideas and improvements as a community.

Quickly discover what the solid compiler will generate from your JSX template

Free and Open source Web Builder Framework. Next generation tool for building templates without coding

A declarative, efficient, and flexible JavaScript library for building user interfaces.

Auto tracking state management for modern React

The 8-puzzle is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing, built in react

Meteor packages for a great React developer experience

Illustration of Meteor bug with malformed Babel config

Demo of bug with Meteor devDependencies

No description.

React hook to dynamically load an external script and know when its loaded

Demo repo for Meteor regeneratorRuntime/coffeescript bug

Demo of inability to NPM.depend on package with ECMAScript code

Python API and CLI for MIT COVID Pass

Support TeX math equations with your Markdown documents.

Pug – robust, elegant, feature rich template engine for Node.js

Python Enhancement Proposals

PEG parser generator for Python

Python extension for Visual Studio Code

ESLint rules for linting Coffeescript source files

ESLint plugin with rules that help validate proper imports.

The best of both `JSON.stringify(obj)` and `JSON.stringify(obj, null, indent)`.

Opinionated HTML formatter focused towards making HTML diffs readable.

🧐 Meteor specific linting rules for ESLint

The English documentation for Pug.

Plugins for reveal.js

Javascript syntax highlighter

A multi-tab layout manager

CoffeeScript support in Atom

React specific linting rules for ESLint

The Meteor API documentation.

Use Cygwin's Git from Go and VSCode

Bootstrap components built with React

Simple CORS proxy server suitable for use as a system daemon on CentOS/RHEL systems

A complete rewrite of the original bootstrap-slider by Stefan Petre.

Collaborative editing in any app

:star: Vim for Visual Studio Code

High-performance moving least squares material point method (MLS-MPM) solver. (ACM Transactions on Graphics, SIGGRAPH 2018)

Web frontend for downforacross.com -- continuation of stevenhao/crosswordsio

Redis Oplog implementation to fully replace MongoDB Oplog in Meteor