Virtual whiteboard for sketching hand-drawn like diagrams

very good whiteboard SDK / infinite canvas SDK

HTML5 canvas based smooth signature drawing

Sketch and take handwritten notes.

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

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

🎨 Classic MS Paint, ＲＥＶＩＶＥＤ + ✨Extras

🍞🎨 Full-featured photo image editor using canvas. It is really easy, and it comes with great filters.

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

Animated sprite editor & pixel art tool -- Fork of the last GPLv2 commit of Aseprite

Publication-ready NN-architecture schematics.

LibreCAD is a cross-platform 2D CAD program written in C++17. It can read DXF/DWG files and can write DXF/PDF/SVG files. It supports point/line/circle/ellipse/parabola/spline primitives. The user interface is highly customizable, and has dozens of translations.

Draw perfect pressure-sensitive freehand lines.

go chart is a basic charting library in go.

A map tool with real-time collaboration 🗺️

✏️ Storyboarder makes it easy to visualize a story as fast you can draw stick figures.

online image editor

MyPaint is a simple drawing and painting program that works well with Wacom-style graphics tablets.

开源白板工具（SaaS），一体化白板，包含思维导图、流程图、自由画等。All in one open-source whiteboard tool with mind, flowchart, freehand and etc.

ksnip the cross-platform screenshot and annotation tool