ShadowEditor

Next AI Draw.io turns natural-language requests into editable draw.io diagrams and can use images, PDFs, or text files as source material. It keeps diagram history, runs as a web or desktop app, and exposes an MCP server for agent workflows. You need to configure an AI provider and API key, and complex diagrams benefit from models that reliably produce long, strictly formatted draw.io XML.

Excalidraw-CN adapts Excalidraw for Chinese handwriting-style fonts and multi-canvas drawing, making sketches and diagrams look more natural in Chinese. The repository can still be run locally for development, but its original online version is deprecated. The maintainer says the project has been fully upgraded into ReveZone, which now provides the recommended web and desktop experience with broader file management and custom-font support.

OpenFlowKit is a local-first diagramming studio for creating architecture diagrams and flowcharts from templates, code, structured imports, screenshots, or natural-language prompts. Diagrams remain visually editable, and the studio can export cinematic MP4 walkthroughs. Users may bring keys for several model providers or run fully offline through Ollama. A companion MCP server lets tools such as Claude Desktop and Cursor create and validate diagrams, while project state is stored locally in the browser without a required account or backend.

Use tld to map and maintain complex software architecture through a C4-inspired visual workspace. Diagrams can be edited in the UI or managed from the CLI, YAML files, and an agent skill, with Mermaid import and export plus links back to editors and GitHub. The standalone binary includes the web app and can run offline with SQLite or be self-hosted; PostgreSQL deployments require pgvector.