Cloud storage.
Choose what fits.

Start with the files you need to protect and the people who need access. Test sharing and recovery as carefully as storage space.

Explore documented products Your buying checklist

Set your priorities
Compare the evidence
Try your workflow

What needs a home in the cloud?

01Personal files

Check the free allowance, device limits and offline access. Upload a mixed folder of documents and photos.

02Shared team folders

Test ownership, external links and what happens when a team member leaves. Include shared storage in the estimate.

03Sensitive documents

Read what encryption protects, who holds the keys and how account recovery works. Check previews and sharing separately.

Build your shortlist

Browse the category

A focused selection, ordered by documented guide criteria. Features may depend on the plan; open the evidence for scope. Missing data is a research gap, not a missing feature.

Dropbox

Free storage allowance: 2 GB Verified Source · Checked 2026-10-03
Scope and evidence
Dropbox Basic includes 2 GB of storage for one person. This is the base allowance, excluding referrals or promotional storage.
Free tier: Yes Verified Source · Checked 2026-10-03
Scope and evidence
Dropbox Basic is a free plan for one person with 2 GB storage and a maximum of three connected devices.
Mobile app (iOS or Android): Yes Verified Source · Checked 2026-10-03
Scope and evidence
Dropbox documents mobile applications for iOS and Android. The Basic plan limits the number of connected devices.

1 more documented criteria

Public API: Yes Verified Source · Checked 2026-10-03
Scope and evidence
Dropbox API v2 exposes HTTP endpoints for files, sharing and account operations. Business endpoints have separate permissions and account requirements.

All documented facts

Proton AG

Proton Drive

Free storage allowance: 5 GB Verified Source · Checked 2026-10-03
Scope and evidence
Up to 5 GB on Proton Free after completing the required startup tasks. The support article states a default allowance of 2 GB before those tasks.
Free tier: Yes Verified Source · Checked 2026-10-03
Scope and evidence
Proton Drive is included with Proton Free. Storage allowance depends on the plan and on completion of the startup requirements.
Mobile app (iOS or Android): Yes Verified Source · Checked 2026-10-03
Scope and evidence
Proton Drive has Android and iOS applications. The guide distinguishes platform-specific upload actions, including folder upload on Android.

All documented facts

See more products in this category

Your buying checklist

Four checks before you commit

Recover a mistakeEdit and delete a test file, then restore both versions. Record the recovery window and plan used.Test a shared linkOpen the link without signing in. Check permission, expiry and revocation controls where available.Check local accessMark a folder for offline access, disconnect and open it. Confirm which files really downloaded.Plan an exitDownload a representative folder and inspect its contents. Check what happens to shared ownership and document formats.

Use this as a working checklist. Checkmarks are not saved.

Common questions

How should I compare free storage?

Compare the base allowance, any setup requirements, device limits and how shared files consume space. Use the same units and separate promotional space from the normal allowance.

Does more storage mean better protection?

Capacity answers how much fits. Recovery, permissions and encryption answer different questions. Test those controls with representative files before moving important material.

Work through the trade-offs

Decision guide

Software security review checklist

What evidence do you need before trusting a new service?

Read the guide Decision guide

How to compare software alternatives

Would a different tool solve the problem that made you look?

Read the guide

Ready to evaluate your shortlist?

Test the same tasks in each product, then compare the full cost.

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