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Head-to-head · AI Diagram Generators

OpenFlowKit vs Eraser

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score OpenFlowKit #1 in AI Diagram Generators 9.4/10 Free plan Free plan✓ 3 of 3 features Visit OpenFlowKit
Eraser #2 in AI Diagram Generators 9.3/10 Free plan Free plan✓ 1 of 3 features Visit Eraser

OpenFlowKit leads on 0 checks, Eraser on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOpenFlowKit · 9.4/10
  • Free planboth
  • Most featuresOpenFlowKit · 3 of 3

OpenFlowKit scores higher on our rubric for ai diagram generators: 9.4 against 9.3 out of 10; our editors rank them #1 and #2.

OpenFlowKit is the better fit for teams wanting free, flexible AI diagramming. Eraser is the better fit for teams needing broad diagram workflows.

  • OpenFlowKit fits best

    Teams wanting free, flexible AI diagramming

  • Eraser fits best

    Teams needing broad diagram workflows

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature OpenFlowKit 9.4/10 Visit ↗ Eraser 9.3/10 Visit ↗
At a glance
Editor score 9.4 9.3
Ranking #1 in AI Diagram Generators #2 in AI Diagram Generators
Best for Teams wanting free, flexible AI diagramming Teams needing broad diagram workflows
Pricing model Free Free plan + paid
Starting price Free $15/user/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Docs Community, Docs, Email
Integrations 13 integrations 9 integrations
Built for Solo, Small business, Mid-market Solo, Small business, Mid-market, Enterprise
Features OpenFlowKit 3/3 · Eraser 1/3
Mermaid support ✓ (best) Not checked yet
Real-time collaboration ✓ ✓
Diagram import ✓ (best) Not checked yet
Specs
AI diagram limit Not checked yet Not checked yet
Platform Web+desktop Not checked yet
Export formats PNG, JPG, SVG, JSON, Mermaid, PlantUML, Figma editable export, WebM, MP4 PNG, SVG, PDF, PowerPoint, Google Slides, BPMN, Visio, draw.io, Markdown
Our review
Pros
  • Generates editable diagrams from prompts, code, SQL, and infrastructure sources
  • Supports Mermaid and OpenFlow DSL editing with canvas synchronization
  • Exports to PNG, SVG, JSON, Mermaid, PlantUML, Figma, and video
  • Generates diagrams from prompts, images, files, and code
  • Supports imports, exports, collaboration, and version history
  • Connects with GitHub, Notion, Confluence, and VS Code
Cons
  • AI generation requires users to provide their own provider key
  • WebRTC collaboration is opt-in beta and off by default
  • Self-hosting requires users to deploy the static application themselves
  • Free plan is limited to 3 files and 3 AI diagrams
  • Starter limits version history to 90 days
  • SAML SSO is available on the Business plan
Our verdict

OpenFlowKit is a local-first diagramming workspace for developers and technical teams. It turns prompts, source code, Mermaid, SQL, OpenAPI, Terraform, Kubernetes, and other structured inputs into editable diagrams. The browser-based…

Read the review →

Eraser is a collaborative diagramming and documentation tool for engineering and technical teams. It supports AI-generated workflows and diagram-as-code for flow charts, entity relationship diagrams, cloud architecture diagrams, sequence…

Read the review →
  1. OpenFlowKitAI Diagram Generators 9.4Free plan
  2. EraserAI Diagram Generators 9.3Free plan

Strengths and trade-offs

  • OpenFlowKit — where it wins

    • Generates editable diagrams from prompts, code, SQL, and infrastructure sources
    • Supports Mermaid and OpenFlow DSL editing with canvas synchronization
    • Exports to PNG, SVG, JSON, Mermaid, PlantUML, Figma, and video

    Where it doesn't

    • AI generation requires users to provide their own provider key
    • WebRTC collaboration is opt-in beta and off by default
    • Self-hosting requires users to deploy the static application themselves

  • Eraser — where it wins

    • Generates diagrams from prompts, images, files, and code
    • Supports imports, exports, collaboration, and version history
    • Connects with GitHub, Notion, Confluence, and VS Code

    Where it doesn't

    • Free plan is limited to 3 files and 3 AI diagrams
    • Starter limits version history to 90 days
    • SAML SSO is available on the Business plan
  • OpenFlowKit9.4/10 · Free plan

    A flexible free diagramming workspace for technical teams that prefer editable, portable outputs.

    Visit OpenFlowKitFull verdict →
  • Eraser9.3/10 · Free plan

    A broad diagram workspace combining AI, diagram-as-code, collaboration, and integrations.

    Visit EraserFull verdict →

More comparisons

All AI diagram generators comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update