Cloud storage decision
Dropbox Plus
A competent developer can build a useful single-user cloud-storage replacement (upload, share links, previews, basic versioning) in about a week, but cannot cheaply reproduce Dropbox’s desktop sync client, global scale, enterprise security, AI integrations, or brand/support advantages.
Visit website↗Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need — the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship.
What a replacement has to do
- Upload files to cloud storage, generate shareable links, preview common file types in-browser, and restore recent versions
What it still won’t have
- Native desktop background sync client with selective sync and advanced offline handling
- Massive global scale, high-volume API capacity and optimizations
- Enterprise-grade security & compliance features (advanced key management, SSO, EKM)
- Integrated advanced productivity and AI features (Dash integrations, built-in AI summaries)
- Brand trust, ecosystem integrations, and large-user support network
What remains hard
- Brand trust
Join the over 700 million registered users who trust Dropbox
- Infrastructure at scale
1 billion API calls/month for data transport partners
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 3 seats.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a minimal Dropbox-like web service using React frontend, Node/Express backend, Postgres for metadata, and AWS S3 for object storage. Implement: user signup/login (Auth0 or JWT), file upload with server-side multipart to S3, metadata and version records in Postgres, expiring signed URLs for downloads and previews, shareable link generation with permission control, and a 30-day restore endpoint. Out of scope: native desktop sync client, enterprise SSO/EKM, large-scale multi-region replication. Include error handling, input validation, automated unit/integration tests, and deployment scripts for a single VM plus S3.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 5 cited sources+3
- Price verified on pricing page+3
- 3/3 assessment runs agreed+4
- Hard moats found in the evidence-3
- Evidence score64
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time — so the same evidence always produces the same number.
How scoring works →Cited sources · 5
Every page the run actually retrieved.
- official productDropbox homepage
- official pricingDropbox plans
- official docsDropbox features
- open sourcehaiwen/seafile
- open sourceowncloud/core
Integrity checks
What held up, and what did not.
