
drawDB — Online Database Diagram Editor & SQL Generator
Design database schemas with ER diagrams and generate SQL code online.
1ilit · HN
DrawDB Pro – design database schemas for your team and agents
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Design database schemas with ER diagrams and generate SQL code online.
1ilit · HN
DrawDB Pro – design database schemas for your team and agents

Visualize SQL schemas as ER diagrams and review AI-suggested fixes before applying them.
@erd_factory · X
Paste your CREATE TABLE statements. Get an instant ER map, flagged issues, and AI-proposed fixes — reviewed as a diff before anything touches your schema.

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.

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

Draw and diagram online with instant collaboration, no sign-up required.
@rishabh21g · X
The whiteboard that just lets you draw

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

Browser tools for creating cloud, database, API, and workflow diagrams without signing up.
u/Sapo-Homien · Reddit
I build iLovePDF - but for Software Engineering. No Sign-up, No ads, No limits, Nothing leaves your browser. 22 browser tools for the stuff engineers keep redrawing: cloud architecture diagrams, ER diagrams, git branching, user flows, state machines, sequence & API diagrams, annotated screenshots, and an AI-prompt builder. No signup, no ads, no limits. Everything you need, runs in your browser. Open your browser's Network tab and watch a tool do its work without a single req

Search ready-made diagram templates in plain language and open any of them in the editor. Free, local-first and no account required.
@Diagramium · X
Diagram marketplace | Search diagrams | Customize it | Animate it | Explain Mode will explain it | Export to GIF/SVG/PNG & full narrated videos

Transform documents and notes into editable presentation slides and charts with AI.
dyfang · HN
TchoAI – Transform your documents into editable slide decks

Design and edit recipe cards online with a visual card editor.
bobblywobbles · HN
Not AI-generated. No sign in required. Free tool to use. My name is Zachary and I've built this app a few times now, in different seasons and with different frameworks. I originally created this tool to give a gift to someone, and now it's morphed into a product I hope people will find useful. There's thoughtful, human-curated features. As someone who loves to cook, it has a lot of features I know I will personally use, such as: - different sizes for printing [for different index cards] - allergen information - macros - easy way to scale up or down ingredients - can switch between metric and imperial measurements

Draw Mermaid diagrams online with 33+ chart types, export to PNG/SVG/PDF.
kalman03 · V2EX
分享一个免费强大的在线 Mermaid 绘图工具 Mermaid Live Editor ( https://mermaid-live-editor.com/ ) 免费强大的在线 Mermaid 绘图工具。无需安装,支持 33+ 种图表类型(流程图、时序图、架构图等)实时渲染,纯前端运行不上传代码,支持导出 PNG/SVG/PDF 格式。

Generate LinkedIn infographics and charts from ideas, CSV, or Excel data.
@manthornelabs · X
We make LinkedIn graphics for B2B founders