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Mermaid Preview

Create Mermaid diagrams and charts in Slack.

Visit Mermaid Preview

Mermaid Preview is a free, open-source Slack integration that renders Mermaid.js diagrams (flowcharts, pie charts, user journeys, timelines, etc.) directly in Slack. Users invoke it with the /mermaid command, input Mermaid code in a dialog, and the app uploads a PNG preview of the diagram as a new message.

11 alternatives to Mermaid Preview

Ranked by how well each tool replaces Mermaid Preview: shared features, audience, price and popularity.

  1. Fanfa

    Animated, interactive Mermaid diagram editor

    Covers 1 of 7 key features.

    Open source
    59 out of 100 match—

  2. draw.io

    Diagram software for flowcharts, org charts, UML, ER, and network diagrams

    Covers 2 of 7 key features.

    Free planOpen source
    56 out of 100 matchContact sales

  3. PlantUML

    Draw UML diagrams from simple text descriptions.

    Covers 2 of 7 key features.

    Open source
    55 out of 100 match—

  4. draw.io

    Free diagramming application with over 100 million users. Your data, your control.

    Covers 1 of 7 key features.

    Free planOpen source
    54 out of 100 matchContact sales

  5. Gliffy

    Communicate complexity with intuitive diagramming.

    Covers 1 of 7 key features.

    Free plan
    54 out of 100 match$2.80/mo

  6. Mindomo

    Collaborative Mind Map Maker

    Covers 1 of 7 key features.

    Free plan
    54 out of 100 match$16/mo

  7. ProcessOn

    AI-powered online flowchart and mind map tool for real-time collaboration and knowledge

    Covers 0 of 7 key features.

    Free plan
    53 out of 100 matchFree

  8. Edraw Software

    Unlock diagram possibilities.

    Covers 1 of 7 key features.

    Free plan
    53 out of 100 matchContact sales

  9. Visual Paradigm

    AI-powered visual modeling platform covering UML, BPMN, enterprise architecture, and agile

    Covers 1 of 7 key features.

    Free plan
    53 out of 100 matchContact sales

  10. MindMeister

    Browser-based mind mapping tool for turning ideas into visual maps

    Covers 1 of 7 key features.

    Free plan
    53 out of 100 matchContact sales

  11. Coggle

    The clear way to share complex information.

    Covers 2 of 7 key features.

    Free plan
    52 out of 100 match$5/mo