EventDiagram is a web application for creating, sharing, and collaborating on event floor plans and diagrams. Plans use real-world dimensions, with capacity, spacing, and square feet per seat updating as objects move. Its 3D view comes from the same scene as the 2D plan and shows objects at their actual heights. The AI copilot can create or edit a to-scale layout from plain-language requests, with proposed changes presented for review and approval. An MCP server and API keys let users’ Claude or other AI tools read and write diagrams. Share links allow recipients to view a plan in 3D, leave pinned comments, and approve a particular version without an account. Seating tools support guest-list imports, table assignments, meal and dietary tracking, and attendee check-in. PDF, image, and data exports are available on every plan, though Free exports have a watermark. EventDiagram offers a free plan at 0.00 USD per free and paid plans listed from $9/mo. Its maker says the service is not SOC 2 certified today.
Who it is for
EventDiagram is presented for hotels and venues, corporate and wedding planners, caterers, rental companies, and AV and production teams. It suits groups that need to share plans and collect comments or version approvals.
What is good
- Capacity updates as plan objects move.
- 3D view reflects objects’ real heights.
- Share-link recipients can comment without an account.
- Seating tools track meals and dietary needs.
- Exports are available on every plan.
What to know first
- Free exports carry a watermark.
- The service is not SOC 2 certified today.
- Free includes one active diagram.
- Free allows three AI copilot messages per month.
Verdict
EventDiagram combines dimension-aware floor plans with 3D viewing, collaboration, and guest-list tools. Its free plan has limits on active diagrams and copilot messages, and its exports carry a watermark.
EventDiagram plans and pricing
All plansCompared on event diagramming software
- Free plan
- Yes
- Seating plans
- Yes
- Floor-plan import
- Yes
- Guest-list import
- Yes
- 3D view
- Yes
- Team collaboration
- shared
