I’ve been testing it and it seems like a good solution for general productivity and a great option for people migrating from MS. It’s open source and cross-platform, but I just don’t see it in any conversations about office software.
For me, it’s so far leagues beyond LibreOffice. I really need something that works on my phone and syncs across devices, and allows collaboration. OnlyOffice seems to fit the bill. It’s also far more intuitive to my preferences.
I am sure that some people wouldn’t like the fact that the interface runs as a webapp, or use of Java, but it’s strange to me that it’s not usually even in the conversation.
I guess by libre office you’re not referring to Collabora?
Collabora is the online version of Libre, and absolutely integrates with mobile, nextcloud, web browsers, collaboration, etc.
I initially used OnlyOffice with my Nextcloud instance, but switched to Collabora with my own CODE server once I realized it was MUCH more thoroughly integrated into nextcloud.