I am looking for a solution to collaborative PDF editing (mostly annotations). I already have a Nextcloud installation with Office for several members so it would be great if it could be integrated, but it is not necessary.
What I mainly want is the possibility to add and view annotations made by several users on the same file at the same time.
Do you have a suggestion?
I have installed OnlyOffice Community Edition and it seems to work. I need to test it with a few others over a real connection (not just locally), but it seems promising.