OpenCloud vs Unison
A side-by-side comparison of two self-hosted file sync & storage options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
OpenCloud
Modern open-source file platform from ownCloud team
VS
Unison
Bidirectional file synchronizer with conflict detection
| Feature | OpenCloud | Unison |
|---|---|---|
| Category | File Sync & Storage | File Sync & Storage |
| License | Apache-2.0 | GPL-3.0 |
| Language | Go | OCaml |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 64 MB |
| Deployment | docker | bare-metal, binary |
| GitHub stars | ★ 5,792 | ★ 5,429 |
| First released | 2025 | 1999 |
| Replaces | Dropbox, Google Drive | Dropbox |
Why pick each one
Choose OpenCloud if…
- Modern, fast codebase
- Lightweight footprint
- Permissively licensed
Frequently asked questions
Is OpenCloud or Unison better?
Neither is universally better. OpenCloud has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are OpenCloud and Unison free and open-source?
Yes. OpenCloud is licensed under Apache-2.0 and Unison under GPL-3.0. Both can be self-hosted at no software cost.
Can I run OpenCloud and Unison with Docker?
OpenCloud: yes. Unison: check the project docs for container support.