OpenFlowKit vs LetDraw

OpenFlowKit9.4Visit LetDraw9.1Visit

Higher score OpenFlowKit #1 in AI Diagram Generators 9.4/10 Free plan Free plan✓ 3 of 3 features Visit OpenFlowKit

vs

LetDraw #4 in AI Diagram Generators 9.1/10 Free plan Free plan✓ 3 of 3 features Visit LetDraw

• OpenFlowKit fits best

  Teams wanting free, flexible AI diagramming

• LetDraw fits best

  Budget-conscious technical teams

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Side by side

Feature	OpenFlowKit 9.4/10 Visit ↗	LetDraw 9.1/10 Visit ↗
At a glance
Editor score	9.4	9.1
Ranking	#1 in AI Diagram Generators	#4 in AI Diagram Generators
Best for	Teams wanting free, flexible AI diagramming	Budget-conscious technical teams
Pricing model	Free	Free plan + paid
Starting price	Free	$50/yr
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web	Web
Support	Docs	Email, Community, Docs
Integrations	13 integrations	2 integrations
Built for	Solo, Small business, Mid-market	Small business, Mid-market, Enterprise
Features OpenFlowKit 3/3 · LetDraw 3/3
Mermaid support	✓	✓
Real-time collaboration	✓	✓
Diagram import	✓	✓
Specs
AI diagram limit	Not checked yet	Not checked yet
Platform	Web+desktop	Web
Export formats	PNG, JPG, SVG, JSON, Mermaid, PlantUML, Figma editable export, WebM, MP4	PNG, SVG, PDF, Mermaid, D2, WebM
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 editable diagrams from prompts, images, voice, and technical sources Supports Mermaid, D2, Docker Compose, Kubernetes, Terraform, SQL, and OpenAPI Combines collaboration, API/MCP access, offline use, and Enterprise self-hosting
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	The Free plan includes only 3 AI prompts The paid plans do not state a numeric monthly AI diagram quota Advanced identity and provisioning features are limited to Enterprise
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 →	LetDraw is a browser-based whiteboard and diagramming tool for engineers, DevOps teams, data teams, and other software-focused groups. Its AI can generate editable diagrams from text prompts, images, and voice, as well as from sources… Read the review →

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

• LetDraw — where it wins

  • Generates editable diagrams from prompts, images, voice, and technical sources
  • Supports Mermaid, D2, Docker Compose, Kubernetes, Terraform, SQL, and OpenAPI
  • Combines collaboration, API/MCP access, offline use, and Enterprise self-hosting

  Where it doesn't

  • The Free plan includes only 3 AI prompts
  • The paid plans do not state a numeric monthly AI diagram quota
  • Advanced identity and provisioning features are limited to Enterprise

• OpenFlowKit9.4/10 · Free plan

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

  Visit OpenFlowKitFull verdict →
• LetDraw9.1/10 · Free plan

  A low-cost technical diagramming workspace with AI, collaboration, and developer-friendly imports.

  Visit LetDrawFull verdict →