Syncthing vs Unison
| Tagline | Continuous peer-to-peer file synchronization between your own devices | Bidirectional file synchronisation tool for Linux, macOS, and Windows |
| Category | File Storage & Sync | File Storage & Sync |
| Replaces | Dropbox, Google Drive | Dropbox, Google Drive |
| GitHub stars | 85k | 5.4k |
| Language | Go | deb |
| License | MPL-2.0 | GPL-3.0 |
| Self-host difficulty | 2/5 Easy | 4/5 Involved |
| Deploy options | Docker Manual | Manual |
| Managed hosting | ||
| Last updated | 2 days ago | 10 days ago |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
Syncthing
- Pure peer-to-peer sync: no cloud copy, so files only exist where a device is online (no always-available server unless you run one)
- No web file browser, sharing links, or per-file access control like Dropbox
- No built-in versioning UI beyond simple file versioning options
- Not designed for multi-user team sharing; it's device-to-device for one owner
Unison
- No web UI; requires CLI or basic GTK client, not suitable for non-technical users
- No mobile clients for iOS or Android
- Conflict resolution is interactive and not automated; requires user intervention
- No file versioning or history; deleted files cannot be recovered from the tool itself
Bottom line
Choose Syncthing if you want the lower-effort setup; choose Syncthing for the larger community and ecosystem. Syncthing has seen more recent development. Open each guide below for deploy steps and the full feature gap.