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sysdraw
What sysdraw is
sysdraw is a browser-based editor for system design and architecture diagrams, built around an infinite canvas. Users can describe a system in plain English to create an editable diagram, then refine it through chat or by prompting changes to a canvas selection. Diagram options include flowchart, sequence, class, ER, and state diagrams, along with a BPMN 2.0 palette. Its searchable icon library covers services, queues, databases, caches, and gateways; connectors snap to anchors and route around obstacles. Mermaid import supports eight diagram types, including gantt, pie, and gitGraph. Collaboration features include live cursors and 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. Free includes 10 scenes, five AI generations per month, and PNG export. Pro costs $6 a month; Ultra costs $20 a month. Export formats include PNG, SVG, PDF, and JSON, with availability varying by tier.
Who it suits
sysdraw suits engineers and everyday system designers who want to create, refine, share, or collaboratively edit architecture diagrams. Offline use without signup is available through local-first auto-save.
What it does well
- Infinite canvas for system design and architecture diagrams.
- Plain-English prompts produce editable diagrams.
- Imports eight listed Mermaid diagram types.
- Live collaboration includes comments and role-based invitations.
- Local-first auto-save works offline without signup.
What to know first
- Free plan is limited to 10 scenes.
- Free plan includes five AI generations per month.
- Free plan lists PNG export only.
- Service is provided without an uptime or error-free guarantee.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | $0 forever · 10 scenes · 5 AI generations/mo · PNG export | Free |
| Ultra | $20/month · Unlimited scenes · 2000 AI generations/mo · traffic simulator · voice rooms · noise suppression | $20 a month |
| Pro | $6/month · 500 scenes · 300 AI generations/mo · watermark-free exports · PDF & SVG export · Mermaid import | $6 a month |
As sysdraw.app lists them, read 30 Sept 2026. The maker's own page has the final word.
Verdict
sysdraw combines diagram creation, Mermaid import, and collaboration on an infinite canvas. Consider its plan limits and the service’s recommendation to export important work as a backup.
Facts from sysdraw's own pages
- 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. · sysdraw.app, 30 Sept 2026
- Audience
- The homepage describes Sysdraw as built for engineers who draw systems and everyday system designers. · sysdraw.app, 30 Sept 2026
- Billing and refunds
- The terms state that Paddle processes payments and that new subscriptions and upgrades have a 14-day money-back guarantee. · sysdraw.app, 30 Sept 2026
- Collaboration
- The canvas supports live cursors, selections, comment threads, @mentions, and email invitations with view, comment, or edit roles. · sysdraw.app, 30 Sept 2026
- Data ownership
- The terms state that users retain ownership of the diagrams and other content they create or upload. · sysdraw.app, 30 Sept 2026
- Diagram modes
- The site lists flowchart, sequence, class, ER, and state diagrams, plus a BPMN 2.0 palette. · sysdraw.app, 30 Sept 2026
- Exports
- The site lists PNG, SVG, PDF, and JSON exports, with plan availability varying by tier. · sysdraw.app, 30 Sept 2026
- Integrations
- The site specifically describes embedding diagrams in Notion, blogs, and READMEs, and importing Mermaid diagrams on Pro. · sysdraw.app, 30 Sept 2026
- Mermaid
- Sysdraw imports Mermaid diagrams in eight listed types: flowchart, sequence, class, state, ER, gantt, pie, and gitGraph. · sysdraw.app, 30 Sept 2026
- Offline and accounts
- Local-first auto-save works offline without signup; signing in enables cross-device sync. · sysdraw.app, 30 Sept 2026
- Purpose
- Sysdraw is a browser-based editor for system design and architecture diagrams, with an infinite canvas. · sysdraw.app, 30 Sept 2026
- 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. · sysdraw.app, 30 Sept 2026
- Sharing and embeds
- Users can publish view-only links and embed live diagrams in Notion, blogs, or READMEs using an iframe. · sysdraw.app, 30 Sept 2026
- 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. · sysdraw.app, 30 Sept 2026
Where sysdraw stands on Freedom251
- AI Diagram Generators#30 of 32