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sysdraw

sysdraw.app

From $6/mo Free plan Web
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Spec score 7.5 #26 of 32 in AI Diagram Generators

What it is

Sysdraw is a browser-based editor for system design and architecture diagrams built on an infinite canvas. Users can describe a system in plain English to generate an editable diagram, then refine it through chat or prompts applied to a selected canvas area. Diagram options include flowchart, sequence, class, ER, and state diagrams, plus a BPMN 2.0 palette. A searchable icon library covers services, queues, databases, caches, and gateways; connectors snap to anchors and route around obstacles. Mermaid imports support flowchart, sequence, class, state, ER, gantt, pie, and gitGraph diagrams. Collaboration includes live cursors, selections, comments, mentions, and email invitations with view, comment, or edit roles. Users can publish view-only links or embed live diagrams in Notion, blogs, and READMEs. Local-first auto-save works offline without signup; signing in enables cross-device sync. The Free plan costs nothing, Pro costs $6 a month, and Ultra costs $20 a month.

Spec sheet

Purpose
Sysdraw is a browser-based editor for system design and architecture diagrams, with an infinite canvas.Read 30 Sep 2026 · sysdraw.app
Audience
The homepage describes Sysdraw as built for engineers who draw systems and everyday system designers.Read 30 Sep 2026 · sysdraw.app
Integrations
The site specifically describes embedding diagrams in Notion, blogs, and READMEs, and importing Mermaid diagrams on Pro.Read 30 Sep 2026 · sysdraw.app
AI diagramming
Users can describe a system in plain English and receive an editable diagram that they can refine in chat or by prompting changes to a canvas selection.Read 30 Sep 2026 · sysdraw.app
Billing and refunds
The terms state that Paddle processes payments and that new subscriptions and upgrades have a 14-day money-back guarantee.Read 30 Sep 2026 · sysdraw.app
Collaboration
The canvas supports live cursors, selections, comment threads, @mentions, and email invitations with view, comment, or edit roles.Read 30 Sep 2026 · sysdraw.app
Data ownership
The terms state that users retain ownership of the diagrams and other content they create or upload.Read 30 Sep 2026 · sysdraw.app
Diagram modes
The site lists flowchart, sequence, class, ER, and state diagrams, plus a BPMN 2.0 palette.Read 30 Sep 2026 · sysdraw.app
Exports
The site lists PNG, SVG, PDF, and JSON exports, with plan availability varying by tier.Read 30 Sep 2026 · sysdraw.app
Mermaid
Sysdraw imports Mermaid diagrams in eight listed types: flowchart, sequence, class, state, ER, gantt, pie, and gitGraph.Read 30 Sep 2026 · sysdraw.app
Offline and accounts
Local-first auto-save works offline without signup; signing in enables cross-device sync.Read 30 Sep 2026 · sysdraw.app
Security and availability
The terms say the service is provided as is, without an uptime or error-free guarantee, and advise users to back up important work by exporting it.Read 30 Sep 2026 · sysdraw.app
Sharing and embeds
Users can publish view-only links and embed live diagrams in Notion, blogs, or READMEs using an iframe.Read 30 Sep 2026 · sysdraw.app
System design tools
The editor includes a searchable icon library for services, queues, databases, caches, and gateways, along with connectors that snap to anchors and route around obstacles.Read 30 Sep 2026 · sysdraw.app

Plans and prices

Free Free $0 forever 10 scenes · 5 AI generations/mo · PNG export Read 30 Sep 2026 · sysdraw.app
Pro $6 a month $6/month 500 scenes · 300 AI generations/mo · watermark-free exports · PDF & SVG export · Mermaid import Read 30 Sep 2026 · sysdraw.app
Ultra $20 a month $20/month Unlimited scenes · 2000 AI generations/mo · traffic simulator · voice rooms · noise suppression Read 30 Sep 2026 · sysdraw.app

Every sysdraw plan and price →

Strong points and limits

Strong points

  • Infinite canvas supports multiple system diagram types
  • AI creates editable diagrams from plain-English descriptions
  • Live cursors, comments, mentions, and role-based invitations
  • Offline auto-save works without signup
  • Mermaid import and PNG, SVG, PDF, JSON exports

Limits

  • Free plan allows 10 scenes and five AI generations monthly
  • PDF, SVG, and Mermaid import require Pro
  • Service has no uptime or error-free guarantee
  • Important work should be backed up by exporting

Who it suits

It suits engineers and everyday system designers who need diagramming, AI generation, Mermaid import, or collaborative editing in a browser.

Verdict

Sysdraw combines AI-assisted diagram creation with broad diagram formats, Mermaid import, and live collaboration. Its free tier is limited, while Pro and Ultra add capacity and features at listed monthly prices.

Where Specifiction places it

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