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:

Event management with some the ability to support conferences

Arlo: https://www.arlo.co/
EventPro: http://www.eventpro.net/index.html
EventsAir: http://www.eventsair.com/

Specialised conference management, maybe with event management functionality

Conftool: http://www.conftool.net/en/index.html
OpenConf: https://www.openconf.com/

Free/open source conference managment

CMT: https://cmt.research.microsoft.com/cmt/
COD: http://usecod.com/
Dryfta: https://dryfta.com/
Open Conference Systems: https://pkp.sfu.ca/ocs/
OpenConferenceWare: http://openconferenceware.org/

Questions

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