Repository Index

The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

• pencil
• nodejs
• electron
• sketching

This unofficial extension integrates Draw.io (also known as diagrams.net) into VS Code.

• hacktoberfest
• vscode-extension
• drawio
• diagram

draw.io is a JavaScript, client-side editor for general diagramming.

• diagram
• javascript
• whiteboard

A renderer agnostic two-dimensional drawing api for the web

• svg
• webgl
• javascript
• canvas

A modern, cross-platform, 2D Graphics library for .NET

• image-processing
• drawing
• c-sharp
• jpeg

TranslatedNumbered hand-drawn style gallery and bilingual prompt Skill

Infinite canvas drawing/whiteboarding app for Windows, Linux and macOS. Made with Godot.

• notebook
• drawing-app
• godot-engine
• vector-graphics

LibreCAD is a cross-platform 2D CAD program. It can read DXF/DWG, and write DXF/DWG/PDF/SVG files. It supports point/line/circle/ellipse/parabola/hyperbola/spline primitives. The GUI is highly customizable, and has dozens of translations.

• cad
• qt
• dxf
• drawing

A lightweight graphic library providing 2d draw for Apache ECharts

• vector-graphics
• canvas
• svg
• 2d

Simple flow library 🖥️🖱️

• flow
• javascript
• javascript-library
• flow-based-programming

Powerful and easy-to-use vector graphics Swift library with SVG support

• ios
• ios-animation
• drawing
• graphics

Antialiased 2D vector drawing library on top of OpenGL for UI and visualizations.

TranslatedA skill that turns SRT subtitles into whiteboard hand-drawn animation with a warm beige paper background and flowing handwriting strokes: mask-based zone masking and arrangement + stream continuous strokes (ink→color).

• ai-skill
• hand-drawn
• opencv
• python

Side menu with some categories to choose.

• android
• java
• animation
• navigationview

A TypeScript chess library for chess move generation/validation, piece placement/movement, and check/checkmate/draw detection

• chess

Simple GTK Paint Program

• csharp
• drawing
• painting
• pinta

The .NET library for ImageMagick

• image
• imagemagick
• convert
• resize

Graph drawing library for JavaScript

• graph-drawing
• layout-algorithm
• visualization
• ngraph

This light-weight library provides images with letter/text like the Gmail app. It extends the Drawable class thus can be used with existing/custom/network ImageView classes. Also included is a fluent interface for creating drawables and a customizable ColorGenerator.

A JavaScript API for drawing unconventional text effects on the web.

• webgl
• glsl
• glsl-shaders
• javascript

Topic in, narrated explainer video out. A Claude Code / Codex skill that turns any topic into a black-canvas motion-graphics explainer video with TTS voiceover, subtitles and a chapter progress bar. Chinese or English; every frame drawn in code with Remotion.

• agent-skills
• ai-agents
• ai-video
• claude-code

See how your app actually fits together. An interactive, plain-English map of your codebase, drawn by Claude or Codex.

• ai-coding
• architecture-diagram
• claude
• claude-code

Online collaborative Whiteboard that is simple, free, easy to use and to deploy

• collaborative
• javascript
• whiteboard
• teaching

The best javascript plugin for app look-alike on- and off-canvas menus with sliding submenus for your website and webapp.

• mmenu
• menu
• navigation
• js