frab is a web-based conference planning and management system. It helps to collect submissions, to manage talks and speakers and to create a schedule.
frab is based upon Ruby on Rails .
Features
Here is an incomplete list of features, to get you an idea of what frab is capable of:
Manage multiple conferences
Manage all the people involved in your conference
This includes (but is not limited to) speakers, moderators, staff etc.
You can reuse a person’s details across all conferences
Manage the individual events your conference is composed of (talks, workshops etc.)
Track an event’s state from inception to final confirmation
Assign people to an event (speakers, moderators, etc.)
Print paper cards with your events for “offline” planning
Conduct a Call for Papers
Collect submissions from prospective speakers
Let speakers enter their data themselves into a central database
Review and rate submissions
Select submissions and let speakers reconfirm their attendance with a single click
Schedule events
Drag&drop events onto your schedule
frab automatically checks for conflicts and gives you instant feedback
Export your schedule to different formats (HTML, PDF, iCalendar, xCal, pentabarf XML)
Use the online schedule or make a static export
Create custom PDF exports
I'm going to private build this app for cloudron and see where I can go before getting stuck and will report back to this post here 
