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Alternatives

Products that do what Line9 – A Mermaid rendering engine with its own layout does

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…

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    A smarter way to create diagrams

    2023

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    Drag & drop whiteboard with text based diagramming

    2024

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    Convert hand-drawn diagrams into digital schemes

    2024

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    Diagrams that don't look like they were auto-generated

    May 2026

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    A new canvas for interactivity

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    Tufte87

    CDN and Node package to generate ASCII graphs inline

    Jun 2026 · tufte.ai

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    A huge pack of layouts for UX prototyping

    2018

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    Hi HN, Nick here, founder at OpenKnowledge. We built an open source library, Visimer, for editing Mermaid diagrams with a what-you-see-is-what-you-get visual editor. Try the playground at https://visimer.com/playground. You can rename labels, change shapes, add new nodes, etc. by clicking and dragging the visual canvas. We set out to build this originally for OpenKnowledge, our markdown wysiwyg editor, then realized it’d be great to share it as a proper embeddable component library so that other apps can leverage it as well. Our general take is that AI is great for generating…

    20d ago · github.com

  9. 9SF

    Hello everybody! I just finished a hobby project. It is a F# library for creating Mermaid graph YAML. I used Fable to transpile to JS (+types) and python, and added a convenience C# access layer. This means you have a nice API for creating Mermaid graphs in 4 languages. My documentation also includes code examples for all languages and a blogpost on library design. Would appreciate feedback!

    2024 · github.com

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    Wireflow358

    Create beautiful flowcharts

    2017

  11. 11DM

    Hey HN, I made this because I wanted a fast editing experience when making flowcharts. Other tools (bottom)require clicking and dragging (or editing code). Knotend is keyboard centric and is supposed to feel more like editing a doc than dragging around boxes and arrows. I've tested in on safari and chrome desktop. Its difficult to use on mobile but you can view existing charts. I'd appreciate your feedback on how you use it, the design, any bugs etc. Thank you. Prior art - https://mermaid-js.github.io/ - Confluence (Atlassian) - draw.io - excalidraw EDIT: fixed the bug on…

    2021 · knotend.com

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    Mathematical art SVG creator with infinite variations

    2019

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    Powerful animation tool. Export Lottie, iOS, Web, MOV & more

    2020

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    Collection of cards for website and app prototyping

    2016

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    Free flowcharts constructor for Figma & Sketch

    2019

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    UXFlow265

    Free customizable flowchart kit for Sketch and Figma

    2017

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    Open-source shared notes with Markdown & Mermaid support

    Sep 2025

  18. 18

    Transform your flowcharts into presentation ready!

    Jul 2026 · mermaid2anything.web.app

  19. 19

    The visual Mermaid editor that lives in VS Code

    Jul 2026 · github.com

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    Flow232

    Beautiful UI animations now with Lottie & Animated SVGs

    2020

  21. 21PI

    Hi HN! I’m Alex from Parabola (https://parabola.io). Parabola is a visual programming tool for creating functional data flows that everyone can use. It’s entirely drag-and-drop, handles data sizes much larger than a traditional spreadsheet, calculates everything live, and can run your flows on a schedule of your choosing. I used to work in strategy consulting, doing data analytics for SMBs and Fortune 500 companies. The amount of time wasted on menial tasks was astounding. Things like cleaning data, generating custom reports, creating human workflows to solve shortcomings in third…

    2018 · parabola.io

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    DrawSQL246

    Better entity relationship diagrams for your database

    2018

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    Flowrift114

    Beautifully designed Tailwind CSS UI blocks

    2021

  24. 24MI

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