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Average Ratings 0 Ratings

Total
ease
features
design
support

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Write a Review

Description

EventDiagram is a web-based event floor plan and seating chart tool built by people who produce live events. Draw a room once or start from the venue's own plan, then drag in rounds, banquet tables, stage decks, LED walls, truss, bars and decor, all true to size. Seat counts and room capacity recalculate automatically, ballroom airwall splits carry their own capacities, and the same diagram opens in 3D with one click. Instead of emailing PDFs, send one share link: clients and vendors view, comment and sign off without creating an account. An AI copilot turns a sentence like "200 guests, rounds of 10, stage north" into a to-scale draft you approve. Plans start free, then $9, $18 and $149 per month with no annual contract. Teams leaving Social Tables or Prismm get free floor plan conversion.

Description

Harpsen, a project management tool that is affordable, helps you organize and manage your business operations in the event and wedding planning industry. It is a user-friendly, intuitive platform that is easy to use and designed to benefit you, your clients, as well as your vendors. You only need one software to send proposals, contracts, or invoices and get paid quickly and securely. Collaboration is essential to running a successful event business. Harpsen offers separate workspaces for vendors and clients as well as a live chat that allows you to communicate with everyone on the spot.

API Access

Has API Yes 

API Access

Has API No 

Screenshots View All

Screenshots View All

Integrations

Claude Yes 
Claude Duet Yes 
Claude for Legal Yes 
Microsoft Excel Yes 

Integrations

Claude No 
Claude Duet No 
Claude for Legal No 
Microsoft Excel No 

Pricing Details

$9 per month
Free plan ($0, no credit card). Solo $9/mo (unlimited diagrams, clean exports). Pro $18/mo (3 editors, 3D view, full production library, branded exports). Business $149/mo (unlimited members, your own inventory, one venue converted for you). Venue Starter $49/property/mo and Venue $149/property/mo for venues. Enterprise custom. Billed monthly; annual saves about 2 months. Viewers and collaborators are always free.
Free Trial Yes 
Free Version Yes 

Pricing Details

$12 per month or $100 per year
Free Trial Yes 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App Yes 
iPad App Yes 
Android App Yes 
Windows Yes 
Mac Yes 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Vendor Details

Company Name

EventDiagram

Founded

2026

Country

Phoenix, Arizona, United States

Website

eventdiagram.com

Vendor Details

Company Name

Harpsen

Founded

2022

Country

United States

Website

www.Harpsen.com

Product Features

Product Features

Event Management

Attendee Management No 
Badge Management No 
Conferences / Conventions No 
Exhibit / Vendor Management No 
Gamification No 
Room Block Management No 
Social Media Promotion No 
Sponsorship Management No 
Surveys & Feedback No 
Ticketing No 
Volunteer Management No 
Weddings / Parties Yes 

Alternatives

Alternatives