I already said it, but acquiring a different project is, in my opinion, not the way to go. Independent projects are essential for a strong and resilient open source community.

Collaboration and cooperation are required though, as they help to promote different projects and raise the awareness of Open source. They can even allow for new standards or feature reach integrations. At least they should.

However, I support the initially posted idea, prefer/recommend Collabora Office though.

If Proton goes this route, I hope they do so by acquiring and integrating OnlyOffice rather than starting from scratch.

I agree that acquiring OnlyOffice rather than starting from scratch would be the way to go if Proton ends up adding office services to their suite.

However, OnlyOffice is quite functional on its own, and free to use. I use OnlyOffice and Proton Drive desktop together quite seamlessly. I don't know anything about OnlyOffice's collaboration functionality, though; individuals who need collaboration may know something I don't that makes Proton integration more important.

In order to switch to Proton for Business, most companies need integrated collaborative office suite including Chat, including Video, Word, Excel and Powerpoint, as well as Notes.
All applications need to be integrated with Drive, Calendar and Mail apps.
Git integration would be nice as well.

I frequently use cloud services to backup my files and photos due to limited space on my hard drive, rather than using the synchronization feature, which is becoming outdated and consumes disk space. It would be beneficial if Proton Drive evolved into Proton Cloud, offering an online version with "My Files," similar to OneDrive.

The only reason for me to store data in the cloud is if I want to collaborate with someone. Please help me de-Google. Thank you.

This is very important for me to, trying to degoogle my life.

I absolutely need open document format support. It's always a hassle on Linux to download a file through the (still only) *web-app*, edit it with LibreOffice, save it somewhere, then upload it again and delete the local file, just to make a "remote" change.

I've added 3 votes to your post and have my own thread on this here:
https://protonmail.uservoice.com/forums/945460-general-ideas/suggestions/48485528-proton-office

Add 3 votes and vote it as critical so we can be heard! I want what you want!

Another thread like mine:
https://protonmail.uservoice.com/forums/945460-general-ideas/suggestions/48448727-collaborative-integrated-encrypted-and-open-sour

I forgot to throw Trello up there. I know it is a Kanban type software, but it sure is a good one.

Proton Office:
An integration with OnlyOffice (for online GUI), CryptPad or OpenOffice would work just fine; I would pay an additional bit for some form of office suite or Notion/Kanban esq integration with for the Proton software suite. Ideally, all of the features of OnlyOffice/OpenOffice with a notion-like productivity journal.

I think this is IMPERATIVE if you are aiming to compete with Google and Microsoft for their cloud software suites. You would easily be able to shill buying more Proton Drive space if this were added, which I would likely buy on top of any price increases for an office feature.

I love that Proton Pass has notes, but it isn't enough. Maybe start with an OnlyOffice integration that works with Proton Drive similar to how Cryptpad.fr does it? Furthermore, I know that XWiki, the creators of Cryptpad, do contract work with corporations. Since they have almost exactly what I am asking for on Proton, maybe reaching out to them and OnlyOffice would be a good idea?

Developers, check out OnlyOffice and Cryptpad.fr (which is also an E2E encrypted service that offers collaborative editing) and see if you could replicate their offerings for us Proton users. That would essentially complete the software suite in my eyes.

Even if you wanted to eventually create your own native solution, THIS would be a great starting/testing point.

Thank you.

Completely agree on integrating Standard Notes into the Proton suite of products. I am a Notion user, paid because I need more storage capacity than the one offered in the free version, but Notion is quite expensive, and I do not use the collaboration features that Notion offers, I just need a personal wiki to use it as my second brain.
I was not aware of Standard Notes (thanks @Huey for sharing!) so I will start trying it now. Proton team: It will be great if in an eventual future launch of "Proton Notes" you include the feature of importing user content from Notion, Standard Notes and the rest of the main note-taking apps.
Thanks in advance!

If such a thing happens, please, re-use already existing open source projects like Collabora Office, Cryptpad or OnlyOffice and do not reinvent the wheel from the ground up.
That's the spirit of Open source and allows for quicker development.

Invite the community as soon as possible to speed up the development.

I'm considering the switch and want to migrate my skiff drive files... but without a basic word processor I can't.

100% required before I commit to any proton mail services. Collaboration is not particularly important for a first pass at this.

Onlyoffice decided to make mobile usage require a subscription fee, even though it was previously available to everyone for free. Collabora is an awesome alternative!

Use an already existing open source frame (like Cryptpad, OnlyOffice or Collabora Office/LibreOffice Online) to create an integrated and collaborative encrypted office suite.

Make it Open source from the very beginning and allow for the community to actively help the development and improvement of the project. Allow and encourage upstream contribution to the office projects.

(There are already three other ideas about an office suite (1. Cryptpad, 2. Onlyoffice and 3. LibreOffice. Merge the ideas into this one ?)

Collabora Office is also a viable, if not better option for a collaborative, integrated and encrypted open source office suite.

This is the most important product missing from the Proton suite. Having a beautiful and private (but shareable) word processor, and spreadsheet would be game changing.

Seeing all these post combined and with the highest number of upvotes on the whole Proton Uservoice I expect this suggestion is getting some attention and hopefully is going to be a planned feature.