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Best Diagrams AI tools

Creating and editing technical diagrams — architecture, flows and whiteboard-style boards. The 10 highest-ranked of the 10 apps tagged Diagrams in the Onei AI catalogue.

Everything tagged Diagrams: apps, skills and MCP servers

  1. Figma AI

    Freemium Image & Design

    Figma

    AI built into Figma Design, Make, FigJam and Slides: an on-canvas agent, prompt-to-app, image tools and MCP, metered by per-seat AI credits.

    Also: MCP, Prototyping

    Figma AI details Figma AI alternatives

  2. Notion AI

    Freemium Business & Productivity

    Notion

    One tool that does it all. Search, generate, analyze, and chat—right inside Notion.

    Notion AI details Notion AI alternatives

  3. Moqups

    Freemium Image & Design

    Browser-based wireframing, diagramming, prototyping and whiteboard app whose MCP server lets Claude, ChatGPT or Cursor create and edit wireframes inside your projects.

    Also: Collaboration, MCP, Wireframing

    Moqups details Moqups alternatives

  4. MockFlow

    Freemium Image & Design

    Visual canvas for whiteboarding, diagrams and app wireframes, with an AI helper that builds boards, screens and prototypes, Figma export and MCP servers.

    Also: MCP, Whiteboard, Wireframing

    MockFlow details MockFlow alternatives

  5. Miro AI

    Freemium Image & Design

    Miro

    AI built into Miro's whiteboard that generates diagrams, summaries and prototypes from board content and runs agents and AI workflows.

    Also: Collaboration, MCP, Whiteboard

    Miro AI details Miro AI alternatives

  6. Whimsical AI

    Freemium Image & Design

    Whimsical

    AI agent and MCP server that generate editable flowcharts, mind maps, wireframes and diagrams in a Whimsical workspace from a prompt.

    Also: Collaboration, MCP, Whiteboard

    Whimsical AI details Whimsical AI alternatives

  7. Mermaid

    Freemium Coding & Development

    Mermaid Chart

    Diagramming app from the team behind Mermaid.js: generate flowcharts, sequence and ER diagrams with AI, edit as code or visually, and draw from agents via MCP.

    Also: Collaboration, MCP

    Mermaid details Mermaid alternatives

  8. Napkin AI

    Freemium Image & Design

    Paste text and get editable diagrams — the visual layer for business writing, without opening a design tool.

    Napkin AI details Napkin AI alternatives

  9. Eraser

    Freemium Coding & Development

    AI copilot for technical design — generate architecture diagrams, sequence diagrams, and ERDs from prompts or code.

    Also: Collaboration

    Eraser details Eraser alternatives

  10. Excalidraw

    Freemium Image & Design

    Open-source whiteboard for hand-drawn style diagrams and wireframes, with text-to-diagram AI, wireframe-to-code and an MCP server on Excalidraw+.

    Also: Collaboration, MCP, Whiteboard

    Excalidraw details Excalidraw alternatives

How this list is ranked

Ranked by editorial weight (0–100), plus 5 points per bookmark up to 10, plus or minus up to 20 for the average review rating; ties go to featured apps, then the most recently updated. Discontinued apps are never ranked.

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