nowfound

Life & fun · January 17, 2025

GUI for editing Mermaid class diagrams

GUI for editing Mermaid class diagrams launched on January 17, 2025 with 230 votes, #163 of 6,142 launches that month and more than 95% of that year's launches. The site was not reachable when checked in September 2026.

Visit docs.mermaidchart.com ↗Alternativestop 3% of January 2025

In plain words

This is a graphical interface for creating and editing Mermaid class diagrams, which are used to visualize object-oriented structures and relationships. It is intended for developers, software architects, and technical teams who need to design and document class hierarchies and system architecture. The tool replaces manual text-based diagram coding with a visual editing approach, making it more accessible to users who prefer drawing over writing diagram syntax.

written from the facts on this page · September 2026

Does a similar job

all alternatives →
  • MA
    Mermaid ASCII Diagrams2024 · mermaid-ascii.art · ▲234
  • Mermaid Chart2023 · mermaid.ai · ▲176

    A smarter way to create diagrams

  • Mermaid AI2024 · mermaid.ai · ▲256

    Maximize your diagramming efficiency with Mermaid AI

  • Line9 – A Mermaid rendering engine with its own layoutAug 2026 · line9.ai · ▲87

    Line9 is a new rendering engine for Mermaid flowchart diagrams that aims to remove the need for manual adjustment of layout. Mermaid is a popular text-based language for describing multiple types of diagrams. Several Mermaid rendering engines already exist. Most, like the original mermaid.js, use Dagre or ELK graph drawing libraries to automatically lay out their diagrams. I’ve used Mermaid for the past four years but often recreated my flowcharts in a diagram editor so that I could modify the layout to something that better suited my needs. Use Line9 when you want an automatic flowchart…

  • Fanfa – Interactive and animated Mermaid diagramsDec 2025 · fanfa.dev · ▲154

    Create cinematic, animated Mermaid diagrams with our powerful Motion Engine. Export to video, share with your team, and bring your flows to life.

  • Mermaid Whiteboard2024 · mermaid.ai · ▲239

    Drag & drop whiteboard with text based diagramming

More life & fun this month

the category →

Source: Show HN post ↗

Launched alongside, January 2025

the whole month →
  • I made an open-source laptop from scratch▲3,237

    Hello! I'm Byran. I spent the past ~6 months engineering a laptop from scratch. It's fully open-source on GH at: https://github.com/Hello9999901/laptop

    Dev tools · 2025 · byran.ee

  • TI
    Tetris in a PDF▲1,289

    I realized that the PDF engines of modern desktop browsers (PDFium and PDF.js) support JavaScript with enough I/O primitives to make a basic game like Tetris. It was a bit tricky to find a union of features that work in both engines, but in the end it turns out that showing/hiding annotation "fields" works well to make monochrome pixels, and keyboard input can be achieved by typing in a text input box. All in all it's quite janky but a nice reminder of how general purpose PDF scripting can be. The linked PDF is all ASCII so you can just open it in a text editor, or have a look at…

    Life & fun · 2025 · th0mas.nl

  • 21st.dev▲1,211

    I originally built this app to organize and reuse interesting React + Tailwind components I came across on Twitter, inspired by the shadcn/ui approach. Later, a friend started contributing their own components, and it got me thinking—this could grow into something bigger, like an NPM for design engineers to share and use components. Would love to hear your thoughts!

    Dev tools · 2025 · 21st.dev

  • JoggAI 2.0: AI Avatar Generator▲967

    Create lifelike, personalized AI avatars from text prompts

    AI · 2025 · jogg.ai

  • Lovable + Builder.io▲873

    Turn Figma designs into full stack apps with AI

    Dev tools · 2025 · figma.com

  • Cs16.css – CSS library based on Counter Strike 1.6 UI▲819

    CSS library based on Counter Strike 1.6 UI.

    Life & fun · 2025 · cs16.samke.me