What is Syncthing?
Syncthing automatically synchronizes files between multiple computers in real-time while encrypting all communication and storing data only on your own devices. It operates without central servers, giving you complete privacy and control over where your data is stored and who can access it.
Syncthing pricing
We don't have Syncthing's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Free and open source
What Syncthing does
The capabilities that matter for file sync, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Deployment model
- P2p client
- Peer to peer p2p network routing
- ✓
- Client server architecture cloud host
- ✗
- Block level delta sync transfer speed
- -
- Self hosted linux docker deployment
- ✓
- Synology qnap nas hardware integration
- -
- Aws s3 azure blob external mounts
- ✗
- Active directory ldap identity sync
- ✗
- Version history and conflict resolution
- -
- End to end encryption keys in transit
- ✓
- SOC2 type ii
- -
- ISO 27001
- -
- Pricing model
- Free open source
Platform & deployment
Independently observed- CLI
- macOS
- Web
- Linux
- Windows
- On-premise
- Self-hosted
Security & compliance
Known vulnerabilities: 3 (0 in the last 12 months), max severity HIGH sourcea count reflects scale & disclosure, not quality
Syncthing FAQ
Common questions about Syncthing, answered from independent, dated evidence.
What is Syncthing?
Syncthing automatically synchronizes files between multiple computers in real-time while encrypting all communication and storing data only on your own devices. It operates without central servers, giving you complete privacy and control over where your data is stored and who can access it. It is indexed under File Sync.
Source: https://syncthing.net
Is Syncthing free to use?
Syncthing is open source, so it can be self-hosted and used at no licence cost. It is released under the MPL-2.0 licence. Pricing changes often, so verify at source before relying on it.
Source: https://syncthing.net
What platforms does Syncthing support?
Syncthing supports the web, Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://syncthing.net
Can Syncthing be self-hosted?
Yes. Syncthing can be deployed on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://syncthing.net
Is Syncthing open source?
Yes. Syncthing is published under the MPL-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Syncthing alternatives
Other file sync we track, ranked by the same independent score.
- RcloneA command-line tool for synchronizing files and directories across cloud storage serviceshigh · 78%
- rsyncFast incremental file synchronization and transfer utilitylow · 47%
- SeafileOpen-source self-hosted storage with privacy, file syncing, and team collaborationlow · 16%
- ownCloudSelf-hostable platform for synchronizing and sharing files across an organizationlow · 26%
- NextcloudA self-hosted platform for file storage, sync, and team collaboration across deviceslow · 21%
- Pydio CellsA self-hosted, open-source platform for secure document sharing and team collaborationhigh · 75%
Compare Syncthing
Side by side against other file sync, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Syncthing, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Release cadence | 96 | 0.05 | 5.0 | ✓ |
| Capabilities | 58 | 0.07 | 4.1 | ✓ |
| Development activity | 39 | 0.09 | 3.6 | ✓ |
| Stars | 93 | 0.03 | 2.4 | ✓ |
| Dependent projects | 37 | 0.06 | 2.4 | ✓ |
| Security score | 58 | 0.04 | 2.4 | ✓ |
| Integrations | 0 | 0.08 | 0.0 | - |
| Security posture | 0 | 0.06 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 16 | mediumsource · 2026-10-14 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 5 items | mediumsource · 2026-09-10 · 67% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Pricing model: free_open_source · Deployment model: p2p_client · Peer to peer p2p network routing: Yes · Aws s3 azure blob external mounts: No · Active directory ldap identity sync: No · Self hosted linux docker deployment: Yes | mediumsource · 2026-08-21 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Go | highsource · 2026-10-14 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MPL-2.0 | highsource · 2026-10-14 · 95% |
Pricing
Release
Security
Is Syncthing the right choice for you?
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