OnlyOffice Interaction /\API

[CodingKittens247]

Hello
There's a free service by the OnlyOffice makers, called OnlyOffice Docs.
It's literally the embed server(service*) for collaborately editing file, like pptx, excels, etc.
They've got an API, so you don't need to replace this, just make this the editor for unsuported file extensions! I wanna be able to edit excel spreadsheets, or powerpoints/word documents! For something to claim to be an "OS", you've really not afforded us a lot of freedom!
Since I am self hosting this, I have another instance for OnlyOffice Docs, which only has the logic for editing documents, useless by itself, needs a front-end. It is literally made for this exact use case, it'd fit in so well here.