I have been using NordLocker for the last 3+ months, great storage power at a great price, also recommended it to my colleague, and he also liked it so far.

It's pretty robust + has a lot of extra features if you are looking for that. I mostly use NordLocker for business/office files.

For personal use, you can't get anything better than pCloud, and it's probably the best-priced cloud storage service I have used. It's great.

It's based in Switzerland, so it has to adhere to strict privacy laws, which makes the service trustworthy. It's priced at: (500GB – 10TB) $4.17 / month - Affordable, cheaper than other services.

Google Workspace? Most are probably familiar with the email, tools, etc already in a personal capacity. US pricing is $12/user. Easy chat and each person gets 2TB cloud storage. You get the convenience of the Gmail interface with your domain email.

Office recommend above is also a good option. Probably depends on what everyone is already more comfortable with to make the transition smooth.

One drive isn’t bad, backblaze is very reasonable too, it has saved my rear end many a time. www.backblaze.com

I worked on a few applications to facilitate real estate office collaboration and document sharing, but what I discovered is that the sales-driven culture actually discourages such collaboration. A lot of realtors and office managers need to keep tight controls in place to prevent information from leaking to other personnel, even within the same office. A lot of the small business software recommended here has looser access controls in place by default, so I’m curious, do you have the same requirements?

I use Office 365. OneDrive works great for cloud file storage and sharing. Teams is a good communication platform. There are tons of other features that you may find useful also. I would recommend checking it out.

Did u find anything? I am also looking!!

Zoho Workdrive is great and meets all your requirements.

Drime offers 500GB free for students.

Fireload works great for me, plus it has direct download links.

I think every S3 service works in your case, I can say wasabi pr Hetzner S3 can to the job. Both of them are incredible cheap and built exactly to handle large amount of data. Have in mind Hetzner S3 it’s still a bit unstable.

Google Workspace?

try files.fm they have all this features

I'd stay away from box, it's as close to a scam as they can legally get (advertising unlimited storage for instance).

Mega s4

https://comparisontabl.es/cloud-storage/

Mega also good in my opinion i use since 2016 maybe i had university files back then for years there were no problem now only backup for a few thing

Drime is very new many thing in beta as they write in a post few days ago good start we will see i also watching them

Filen for storage (non photo)

Ente for photos

both are E2EE encrypted

Koofr is good too. It has normal storage like google and E2EE storage called ‘vault’ . PCloud is similar .

For just photos, if you want to host your own, Immich is awesome

EDIT: You didn't say if you wanted to "sync" files with local folders on your PC/Mac/Linux box or not. If you are JUST going to leave files in the cloud and access via browser, Koofr vault good, but also things like Sync.com perhaps or Tresorit. But the need for end-to-end-encryption changes the list.

• E2EE files: filen, tresorit, sync.com, internxt, Mega
• Partial E2EE: pcloud, icedrive, koofr
• E2EE Photos only: Ente

Yeah I’m experimenting with cloud drives right now, currently using filen, but I think Google Drive and Photos is definitely better value and just better all around. I use Cryptomator with Google Drive for peace of mind when I am using it.

Filen is nice and encrypted

Strato, IONOS - both HiDrive, Xaweho and Hetzner with S3 Storage that I prefer most

Splitting the 3TB across your 13 Microsoft 365 users should work, especially since you already have that setup. If you want something more streamlined, and you're using Microsoft 365 or Google Workspace, Cube Backup could be a good fit for backing up your 3TB of data. It’s made for those platforms, so no issues with storage limits, and it keeps things pretty straightforward.

You mention you already do daily backups, etc. What are you backing it up with? SAN/NAS? Something like Synology? If so, there are apps that you can use within the device to automatically shove the data and changes over to nearly all S3 type buckets. There are a ton of providers such as Backblaze or Comet or even cold storage providers.

Both Microsoft and Amazon have “deep cold storage”.         

Backblaze is a great option too. I use their personal backup solution.

Get a Carbonite account and use that. It's saved our bacon a couple times in the last 5 years.

I am using IDrive so far its doing great you may try once.

https://www.idrive.com/

The best solution is the one you use, your team likes and is used to it.

We use Google Drive because we use Google Workspace. If I were using Office 365, I would have used One Drive. I don't want to add another subscription service when Google Workspace does the job just fine.

Quick question, do you code your websites for your clients or what? And how do you reach them ?

Nextcloud

Droplr is the best, comes with extensions to easily share screenshots and recordings with annotations as well as files

iCloud

Unparalleled integration for Apple devices - everything else is just a weak copy.

I suggest to try IDrive.

We use Google Drive and it works great. Ditched our on-prem file server for Drive and haven’t looked back yet.

Stay away from one drive. It sucks

OneDrive is hideous on any platform, but especially on macOS.

Steer clear if you value your sanity.

Carbonite’s 1TB business plan starts from $6 a month for one computer with no file size limit and zero restore costs. If you are looking for something even more affordable, I would suggest looking at Polarbackup’s business solutions, their 1TB plan starts from $79 for unlimited users and servers. They are currently doing 50% off with code PBUS50. This is their website: https://www.polarbackup.com/business/

I think you should try Filecloud. Works well for me plus its pocket friendly

Readynas then rsync for off site to google drive.

Just backup or also DR? Azure backup for files or VMs, Azure Site Recovery for DR.

I love BackBlaze. It may fit your requirements.

OneDrive and Google Drive are both good options, much of a muchness between them if you ask me. I like Google Docs for things like spreadsheets - you won't need to do any Excel black magic (hopefully) so the convenience of being web based is good.

If you're getting serious about storage, consider a NAS as well, and using a 3-2-1 backup system: 3 copies (local, NAS, cloud), 2 independent systems (local, NAS), 1 off-site (cloud). You spend a bit upfront but it's nice to have a big bucket of storage that looks after itself, and you can just dump things like VSC files onto it as warm archival storage.

All my personal stuff is in iCloud, everything I share is through google drive

I use Nextcloud selfhosted on Digital Ocean. - may move to Linode but not really examining things yet as DO has been pretty solid.

Nextcloud does my calendar, kanban, notes, and file transfer... and webmail... and a few other things

I use google drive. It’s fast and if you use their app on the computer you can treat it like a network drive. Works great!

I've used Dropbox for coming up on a decade and it's never failed me. I also find it's what the majority of people I work with use already, which makes it nice and easy for sharing folders.

I used to use Google Drive alongside Dropbox for one specific client, but after a couple of major data losses (for this reason, you need a backup alongside your cloud storage) and file corruptions I don't touch it any more. Google Drive always seemed to struggle with the idea that we might not always have internet, which obviously caused a fair amount of issues given the varied locations we work. Admittedly I've not touched it since pre-COVID, so these issues may have been solved by now.