15 GB storage for 3.99€/mo or 500 GB for 9.99€/mo. Discount for yearly payments. Based in Switzerland.
Coming from the Proton ecosystem, this is the natural choice if you already use their mail or VPN and want encrypted storage under the same Swiss roof and account. The honest limits are that it is younger than Proton’s other products, so desktop and sync clients have been catching up, and the free 15GB is modest. Strong if you are consolidating into Proton; as a standalone drive judged purely on features, more established options compete hard.
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Proton Drive alternatives
Free to use and modify, but anything you distribute that is built on it must also be open under the same license.
Permits
- Commercial use
- Modification
- Distribution
- Patent use
- Private use
Requires
- Disclose source
- Same license
- State changes
- License and copyright notice
Does not provide
- Liability cover
- Warranty
Why it matters: Strong copyleft keeps every distributed version open. A vendor cannot fold this into a closed product and ship it without releasing their changes.
Plain-language summary of the project's license, not legal advice. Read the full text for the exact terms.