Comparisons
Compare every event diagramming tool
In April 2025, Cvent — which already owned Social Tables — acquired Prismm (formerly AllSeated) and began consolidating both into Cvent Event Diagramming. Every comparison in this space is now really one story: the two main tools merged into one enterprise product with annual contracts. These pages lay out the details honestly, including where Cvent wins.
The whole market
Every tool, side by side
| Cvent Event Diagramming | Prismm | EventDiagram | |
|---|---|---|---|
| Formerly | Social Tables | AllSeated | — |
| Status | Active | No new events after Oct 1, 2026 · access ends June 2027 | Active & independent |
| Published pricing | Free; $49 / $150 / $320 per month; Enterprise custom | Accounts migrating into Cvent Event Diagramming | Free $0; Solo $9/mo; Pro $18/mo. Then Business $149/mo per workspace if you work at lots of venues, or, if people hold events at your venue, Small Venue $49 or Venue $149 per property/mo by the size of the building. Large Venue, for the biggest buildings, is quoted in one call. |
| Commitment | 12 months on paid plans | — | Monthly on every self-serve plan, cancel anytime |
| Editors included | 1 licensed account on every tier below Enterprise; the event, diagram and attendee limits are per account | — | 3 editors on Pro; unlimited on Business and Venue plans |
| Collaborators | Unlimited and free on every tier, with edit or view permission, invited into the licensed account’s events | — | Unlimited viewers & commenters, free on every plan |
| Attendee cap | 150 per list below the $320 tier | — | None on any plan |
| Where it wins | Suite breadth, venue network, mature 3D | Photorealistic 3D — inherited by Cvent | Speed, price, free collaboration, open exports, floor plans we trace for you |
Competitor details from Cvent’s public pricing page and Cvent’s Prismm transition materials, checked September 14, 2026. If something here is out of date, tell us and we’ll correct it.
Go deeper
The four comparisons, in full
Social Tables alternative
Cvent Event Diagramming’s published pricing and annual commitment vs. monthly billing and free collaborators — including where Cvent wins.
Deadline: Oct 1, 2026Prismm alternative
Prismm stopped taking new events on August 26, 2026 and access ends June 2027. What migrates to Cvent, what doesn’t, and the independent path.
Two name changes behindAllSeated alternative
AllSeated became Prismm, and Prismm is being sunset by Cvent. If you knew it as AllSeated, start here.
The new official nameCvent Event Diagramming alternative
The current name for Social Tables. A comparison for teams that need diagramming without the Cvent suite.
The long reads behind these pages: every Social Tables alternative compared, what Social Tables pricing actually costs per event and per editor, what happened to AllSeated, what survives the Prismm migration, and the Prismm export checklist.
Start free. Upgrade when you’re diagramming every week.
The free plan takes one diagram end to end — to real scale, with tables, seating and sharing included.
No credit card required
EventDiagram is not affiliated with, endorsed by, or sponsored by Cvent, Social Tables, Prismm, or AllSeated. All product names, logos, and brands are property of their respective owners and are used for identification purposes only. Competitor pricing and policy details are drawn from public sources and dated where shown; tell us if something is out of date and we’ll fix it.