2 open source alternatives to OneDrive
Microsoft's cloud storage integrated with Windows. Here are the open source projects real teams use instead — ranked by fit, with honest pros and cons for each.
What people don't love about OneDrive
- Heavy integration with Windows — hard to disable.
- Privacy concerns around telemetry.
- Moving files away later is painful.
Current OneDrive pricing (for reference): 5 GB free; 100 GB from $1.99/month.
Quick comparison
| Alternative | Best for | License | Self-host | Hosted cloud? |
|---|---|---|---|---|
|
Nextcloud Self-hosted Dropbox and Google Drive alternative — files, calendar, contacts, and more. |
Full Microsoft 365 alternative with office server integration. | AGPL-3.0 | ★★★☆☆ | Yes |
|
Seafile File sync and share with block-level deduplication. |
Reliable sync for a Windows-centric home or office. | AGPL-3.0 / Apache-2.0 (client) | ★★★☆☆ | Yes |
1. Nextcloud — Full Microsoft 365 alternative with office server integration.
Self-hosted Dropbox and Google Drive alternative — files, calendar, contacts, and more.
Strengths
- Huge app ecosystem — Talk, Office, Mail, Deck.
- Strong privacy and encryption features.
- Works well on small home servers or enterprise deployments.
Weaknesses
- Performance depends heavily on setup (PHP + DB tuning).
- Many features come from third-party apps with variable quality.
- Mobile photo sync occasionally needs manual fixes.
Nextcloud homepage · Source on GitHub · OneDrive vs Nextcloud →
2. Seafile — Reliable sync for a Windows-centric home or office.
File sync and share with block-level deduplication.
Strengths
- Very efficient sync engine (block dedup).
- Strong reliability on large file sets.
- Libraries model keeps things organized.
Weaknesses
- Community edition lacks some pro features.
- UI is functional but less polished than Nextcloud.
- Smaller app ecosystem.
Not what you're looking for?
Browse other tools in File Storage & Sync, or check out open source projects by category on the full category index.
Recommended reading
When self-hosting goes wrong: seven failure modes and how to avoid them
An honest retrospective on the ways self-hosted setups break — not in theory, but in practice — and the small habits that prevent most of them.
Will the open source project you depend on still exist in three years?
Bus factor, maintainer burnout, funding models, and the signals that separate OSS projects that survive from those that quietly decay.
From SaaS to self-hosted: a 30-day migration playbook
A week-by-week plan to move one service off SaaS and onto your own server without breaking your team's workflow.