
Cvent
6.9#2 in event diagramming softwareAndroidiOSWeb
Visit

Cvent suits event teams organizing in-person, virtual, hybrid or webinar programs that need registration and related attendee tools. Enterprise may suit teams needing all user logins and listed administrative features.
E3D Planner suits event planners, venues, and teams that need to lay out event spaces, manage seating, or share designs with clients. It is also relevant to teams that need mobile viewing and sharing, while doing full 3D design on desktop or laptop.