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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.

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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.
License: AGPL-3.0 Self-host difficulty: 3/5 Hosted cloud optionDesktop: Windows, macOS, LinuxMobile: iOS, Android

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.
License: AGPL-3.0 / Apache-2.0 (client) Self-host difficulty: 3/5 Hosted cloud optionDesktop: Windows, macOS, LinuxMobile: iOS, Android

Seafile homepage · Source on GitHub · OneDrive vs Seafile →

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