RapidChart.ai

What it does

Create technical diagrams in minutes, not hours. Turn natural language prompts into stunning diagrams, from UML and ER diagrams to full system architecture. Fully customisable, just describe it, and it appears.

Create professional UML diagrams instantly with AI. Generate class diagrams, ER diagrams, and more from simple text descriptions. Fast, intuitive, and powerful.

In the maker’s words, at launch

Hi HN, UML diagrams were meant to standardise system design, but they’ve become outdated — slow to build, hard to change, and rarely used in practice. Most tools feel clunky, and diagrams often go stale fast. I’m building RapidChart, a tool to bring diagramming back to life — fast, flexible, and developer-first. What…

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  Diagram as code tool with draggable customizationsOct 2025 · github.com · ▲266

  In the past I've used declarative diagram generation tools like Mermaid.js a lot for quickly drawing up things but for presentations or deliverables I find that I have to then move the generated diagrams over to a tool like Lucidchart which allows full control of the organization and customization. Therefore I am now working on this to combine the benefits of both into just one tool which can do both functions. The project is certainly in the early stages but if you find yourself making architecture diagrams I'd love to hear your thoughts on the idea or even a Github issue for a feature…

• QS
  quickly share UML diagrams2013 · app.umlbin.com · ▲45
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  Quick Diagram2020 · quickdiagram.com · ▲121

  A tool for generating diagrams and flowcharts from text.

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  DiaChat2022 · ▲102

  Create and edit diagrams easily using natural language

• FE
  Fast, Easy System Diagrams2019 · architype.io · ▲59
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  Gleek diagram maker – UML class, Sequence, ER diagrams, Flowcharts2021 · gleek.io · ▲56

  Create diagrams without touching your mouse. Generate informal, class, sequence, state, gantt, user journey or entity-relationship diagrams using only the keyboard.

• 
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• 
  Germany's new sovereign AI model Kolibri▲424

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• 
  Trickle - Magic Canvas ▲1,064

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  AI · 2025 · trickle.so

• TB
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  Life & fun · 2025 · trytender.app

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  Ten years of running every day, visualized▲958

  Today marks ten years, 3653 consecutive days, of running at least one mile every day under the USRSA rules [1]. To celebrate, I built an interactive dashboard that turns a decade of GPX files into charts you can explore. Running has truly changed my life: I've made lifelong friends, explored beautiful places, and more importantly invested into my own health and fitness, which I'm starting to see the positive benefits as I get older. The stack is pretty simple: a NextJS app, with a Postgres database to keep all my running data, and all the stats are pre-computed and cached in Redis, so I…

  Dev tools · 2025 · nodaysoff.run

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  Draw a fish and watch it swim with the others▲935

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  AI · 2025 · drawafish.com

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  Use Their ID – Use your local UK MP’s ID for the Online Safety Act▲862

  Hi HN - I made a site that takes a UK postcode, grabs the local MP's information and generates an AI mockup of what their ID might look like. It's a small, silly protest at the stupidity of the Online Safety Act that just came into force. edit - My open AI credits got hugged to death, please use a known postcode (like one from Kier Starmer's constituency, WC2B6NH) in the meantime.

  AI · 2025 · use-their-id.com