pretalx - From Call for Papers to schedule – build your conference!

[jdaviescoates]

I found this via Venueless as it's made by the same people (who also created pretix).

"pretalx is a conference management software that stays with you every step of the way"

https://pretalx.com/p/about/
https://github.com/pretalx
https://github.com/pretalx/pretalx
https://docs.pretalx.org/administrator/index.html