
NapkinBook: a computional whiteboard
Computational whiteboard for data analysis and insights, no signup required.
tccole · HN
Napkinbook, a smart canvas for discovering, and sharing insights
The full gallery
Tech stack
24 projects

Computational whiteboard for data analysis and insights, no signup required.
tccole · HN
Napkinbook, a smart canvas for discovering, and sharing insights

Transform academic papers and sketches into publication-ready methodology diagrams and research figures.

Free online tool for creating flowcharts, process diagrams, org charts, and UML diagrams.
@N0V4Dev · X
I found a tool called Next AI that links AI capabilities directly with diagrams. It lets you build and edit diagrams using natural language prompts instead of clicking around the canvas manually. It's a handy way to sketch out architecture when you don't want to drag every box yourself. The project is built on TypeScript with React 19 and Next.js. It supports multiple AI providers and even includes an MCP Server. This means you can use it with the Claude Code CLI to generate diagrams from your terminal. Deployment options are flexible too. You can run the tool locally with Docker or push it to Vercel and Cloudflare Workers. It supports multi provider setups so you can pick the backend that fits your workflow. #Nextjs #AI #Diagrams #TypeScript

Create diagrams from text using Mermaid, PlantUML, and D2, then export as PNG/SVG.
@soyalexdzul · X
Open-source platform for creating, organizing, and exporting diagrams using plain text markup. It combines the power of Mermaid, PlantUML, and D2 with a polished interface

Collaborative whiteboard for wireframes, flowcharts, and process design — no signup needed.
veau · V2EX
[产品自荐] 基于 Excalidraw,我做了一个更顺手、更全能的纯本地白板: 1NX 作为产品民工+重度 Excalidraw 用户。 在 AI 的加持下,基于 Excalidraw 做了一个更顺自己手、更全能的纯本地白板:**1NX.NET** 访问地址: https://1nx.net/ **核心解决日常画图、画交互、读取各种文件轻量化处理的问题。** 产品能力概览: * 无须注册,打开即用。完整兼容 Excalidraw ,旧图可直接导入继续编辑 * 优化画布操作手感和交互,解决存储满的问题,大量元素上依然流畅 * 流程图、脑图、原型、文档、代码和图片都能放在同一张画布 * 支持 Axure 、XMind 、draw.io 、Visio 、Mermaid 、PlantUML 等格式直接导入 * 代码块、PDF 、Word 、PPT 、Excel 可直接摊开阅读;无需打开软件 * 图片裁剪、切片、马赛克、高清放大、智能抠图一站完成(全单机完成) * AI 生成思维导图、流程图、以及汇报级别的 PPTX * 增强本地化单文件能力,全

Create and export Mermaid diagrams including flowcharts, ERDs, and sequence diagrams online.
ghosts_ · HN
I've been slowly adding some new free tools to Moxie Docs (partly for SEO, partly to illustrate some of our feature sets before any commitment) for some reason this mermaid editor one blew up on Google rankings so I figured I'd share in case people find it useful! We also have ADR, AGENTS.md, LLMs, and a few other free tools.

A free diagramming tool with workspaces, folders, and version history. Sketch an idea now, come back to it next month.
@_aniruddha_d · X

Organize tasks using kanban boards, notes, and calendar on web or Android.
@ak14053 · X

Create visual product requirements documents using a minimalist canvas interface.
@KolhyP92244 · X

Capture meetings, write notes with AI, and create diagrams on a shared canvas in one place.
@rubs_murga · X

Start a board, give your agent the Ink skill, and whiteboard a project on the same live surface.
@trygetink · X
The whiteboard with superpowers over at

Photograph a slide, whiteboard, or paper and find matching research in Firecrawl's 43 million paper index.
@_stingraze · X
Find Research Papers by taking a photo of your handwritten notes or printed paper.