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Eraser

Diagrams-as-code and design docs for engineering teams, with AI diagram generation.

Free plan + paidDiagramming tools
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About Eraser

Eraser is a web app that combines technical design documents with diagrams written in its own diagram-as-code syntax, so engineers can describe cloud architecture, sequence, ERD and flow diagrams in text, see them rendered with proper icons, and then adjust visually on a canvas. Its AI can generate diagrams from prompts, code or existing docs, and an Eraserbot can keep codebase diagrams updated from your GitHub repositories. There are integrations for Confluence, Notion, VS Code and GitHub, and a diagramming API for automation. The free plan is enough to try it but limits you to a few files and AI credits; Business and enterprise plans are billed per member and are priced well above general diagram tools, reflecting its focus on engineering teams. It is less suited to non-technical diagramming such as org charts or marketing visuals.

Best for: Engineering teams writing design docs and architecture diagrams together.

Pros and cons

What works

  • Diagram-as-code syntax with good-looking cloud icons
  • Docs and diagrams in the same file
  • AI generation from prompts, code and repos
  • Integrations with GitHub, VS Code, Notion and Confluence

Why people leave

  • Free plan limited to three files
  • Expensive per member compared with general tools
  • Narrow focus on software engineering diagrams

Top Eraser alternatives

See all 5
  1. 1Mermaid logo
    Mermaid

    Free, open-source text diagrams that render directly in GitHub.

    66.5
  2. 2D2 logo
    D2

    Open-source diagram language with a local CLI if you want to keep everything in the repo.

    62.6
  3. 3IcePanel logo
    IcePanel

    Model-based C4 architecture diagrams that stay consistent across views.

    59.6
  4. 4Ilograph logo
    Ilograph

    Interactive, zoomable architecture diagrams defined in code, at a lower price.

    57.2
  5. 5Lucidchart logo
    Lucidchart

    A broader tool for the whole company that also supports Mermaid code.

    55.3

Why people left Eraser

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

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Eraser: common questions

Is Eraser free?

Eraser has a free plan and paid plans. Free plan: 3 files, 3 AI credits (checked on Eraser's own site).

Is Eraser open source?

No, Eraser is not open source. Open-source alternatives include Mermaid and D2.

What platforms does Eraser run on?

Eraser is available for Web.

What are the best alternatives to Eraser?

The highest-ranked Eraser alternatives right now are Mermaid, D2 and IcePanel. See the full ranked list for pricing, platforms and verified facts.

See all 5 Eraser alternatives