Alternatives to Microsoft OneDrive
Microsoft's cloud storage, built into Windows and Microsoft 365. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Microsoft OneDrive
Microsoft's cloud storage, built into Windows and Microsoft 365.
Replacements
Listings that take over the same core job as Microsoft OneDrive.
Google Drive
Google's cloud storage and file sharing service with desktop sync and mobile apps.
Google Drive offers 15 GB free instead of 5 GB and integrates with Docs, Sheets and Slides instead of Office, but it also has no official Linux client.
Dropbox
The original file sync service, with clients on every platform.
Dropbox adds a Linux client and a mature sync engine with smart sync, but its free tier is only a few gigabytes and caps linked devices.
iCloud Drive
Apple's cloud storage, integrated across macOS, iOS and Windows.
iCloud Drive integrates into macOS and iOS rather than Windows and Office, offers Advanced Data Protection encryption, and also starts at 5 GB free.
Box
Enterprise content platform with governance and compliance controls.
Box targets organisations with retention, classification and audit controls and a drive client that mounts the library without downloading it, priced for businesses rather than individuals.
pCloud
Swiss cloud storage with lifetime plans and optional client-side encryption.
pCloud has a Linux client, lifetime plans and a virtual drive that streams files, with client-side encryption available as a paid add-on.
MEGA
End-to-end encrypted cloud storage with a large free tier.
MEGA has a Linux client, a large free tier and end-to-end encryption by default, but transfer quotas apply on free and lower paid tiers.
Proton Drive
End-to-end encrypted cloud storage from Proton for backing up, syncing and sharing files and photos.
Proton Drive encrypts files end to end so Proton cannot read them, but it requires a Proton account and lacks the Office and Windows integration.
Nextcloud
A file sync and collaboration server you run yourself, with desktop and mobile clients that behave like Dropbox.
Nextcloud is an open-source GPL-2.0 server you run yourself, with Linux clients and virtual files, so storage is your own disk and maintenance is yours.
Similar software
Related functionality, not a direct replacement.