Design and diagrams decision
Creately
A single-developer can build a useful, single-user diagramming app (canvas, shapes, persistence, export) in about a week, but reproducing Creately's enterprise features (certifications, multi-user real-time collaboration, AI-powered diagrams, integrations, and managed scaling) is non-trivial and favors keeping the paid service for those needs.
Visit website↗Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need — the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship.
What a replacement has to do
- Create and edit diagrams on an infinite canvas, apply shapes/templates, save/load documents, and export to SVG/PDF.
What it still won’t have
- Real-time multi-user collaboration (live cursors, concurrent editing)
- Enterprise-grade compliance and certified security posture
- Built-in AI diagram generation and advanced automation
- Large template/catalog breadth and integrations (Teams, Slack, Confluence, etc.)
- Hosted scaling, uptime SLAs, and managed support
What remains hard
- Compliance and regulation
ISO 27001, SOC 2 - Type 2, Data Residency & Up-time SLAs
- Compliance and regulation
SOC2-Type II, ISO 27001 Certified, HIPAA and GDPR Compliant
First-year cost
No published price
Creately does not publish a price we could read, so there is nothing to compare against. What building costs is below.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a minimal single-user diagram editor using React + Konva for the canvas, Node.js + Express and Postgres for persistence. In scope: infinite canvas with pan/zoom, add/move/resize basic shapes, a small template library, save/load documents to Postgres, SVG/PNG/PDF export, user sign-up/login, and basic version history. Out of scope: real-time collaborative editing, enterprise compliance certifications, advanced AI diagram generation, and integrations. Include error handling, input validation, and unit/integration tests for API endpoints.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 5 cited sources+3
- 3/3 assessment runs agreed+4
- Hard moats found in the evidence-3
- Evidence score61
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time — so the same evidence always produces the same number.
How scoring works →Cited sources · 5
Every page the run actually retrieved.
- official productCreately | Visual Collaboration & Diagramming Platform
- official pricingPlans & Pricing | Creately
- official docsProduct Development Strategy | Your Visual Workspace | Creately
- open sourcejgraph/drawio
- open sourcejgraph/drawio-desktop
Integrity checks
What held up, and what did not.
