obsidianmd / pele

Renders Mermaid diagrams faster than you'd run from a volcano! 🌋

jgraph / drawio

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

didi / LogicFlow

A flow chart editing framework focus on business customization. 专注于业务自定义的流程图编辑框架，支持实现脑图、ER图、UML、工作流等各种图编辑场景。

clientIO / joint

A proven SVG-based JavaScript diagramming library powering exceptional UIs

openflowkit / openflowkit

Free, open-source diagram canvas. Draw it, write it as code (Mermaid, D2, Structurizr in), ask any AI model or a local one, let Claude Code edit it live over MCP, or map a GitHub repo with every arrow cited to a file and line. MIT, local-first, no account.

d2lang / d2

D2 is a modern diagram scripting language that turns text to diagrams.

NorthwoodsSoftware / GoJS

JavaScript diagramming library for interactive flowcharts, org charts, design tools, planning tools, visual languages.

antvis / X6

🚀 JavaScript diagramming library that uses SVG and HTML for rendering.

TeXlyre / texlyre

A local-first LaTeX & Typst web editor with real-time collaboration & offline support

eclipse-sprotty / sprotty

A diagramming framework for the web

yWorks / svg2pdf.js

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

prmr / JetUML

A desktop application for fast UML diagramming.

synergycodes / ng-diagram

ngDiagram – open-source Angular library for interactive diagrams, node-based editors, and workflow builders. Angular-first: signals and templates.

dziksu / StructSmith

Local-first, MCP-native tool for modelling software architecture. C4-style semantic model, React Flow editor, SQLite, single container — a self-hosted Structurizr alternative your AI client can edit over MCP.