There are literally dozens of event management solutions that can do most of what we require, but the field narrows considerably when we consider some of the conference-specific needs, or at least it appears to without further investigation.. The most obvious contenders for consideration are then:
Arlo: https://www.arlo.co/
- EventPro: http://www.eventpro.net/index.html
- EventsAir: http://www.eventsair.com/