Syncthing by syncthing
Open Source Continuous File Synchronization
About Syncthing
From the project's README at github.com/syncthing/syncthing. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://www.mozilla.org/MPL/2.0/) [](https://bestpractices.coreinfrastructure.org/projects/88) [](https://goreportcard.com/report/github.com/syncthing/syncthing) Goals
Syncthing is a continuous file synchronization program. It synchronizes files between two or more computers. We strive to fulfill the goals below. The goals are listed in order of importance, the most important ones first. This is the summary version of the goal list - for more commentary, see the full [Goals document][13].
Protecting the user's data is paramount. We take every reasonable precaution to avoid corrupting the user's files.
Again, protecting the user's data is paramount. Regardless of our other goals, we must never allow the user's data to be susceptible to eavesdropping or modification by unauthorized parties.
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 84k | github.com/syncthing/syncthing |
| GitHub forks | 5.1k | github.com/syncthing/syncthing |
| Docker Hub pulls | 120572k | hub.docker.com / syncthing |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 12.5 years | since Nov 2013 |
| Last commit | 3 days ago | May 4, 2026 |
| Releases shipped | 465 | last: 11 days ago |
| Security policy | SECURITY.md | declared by maintainers |
| Funding links | 2 | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2022-46165. What people say on Hacker News
- Syncthing: Open-Source Continuous File Synchronization
- Rcarmo/syncthing-kicker: Make Syncthing rescan (mostly) when you want it to
- Show HN: Request sensitive user input from system services
- Key handover in the dark: Syncthing fork community raises alarm
- Syncthing-Android have had a change of owner/maintainer
Replaces these paid SaaS
Syncthing is one of the open-source alternatives to:
Ready to self-host Syncthing?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
Similar open-source projects
Projects in our directory that replace the same SaaS or share topics with Syncthing.