Kitsmith / Utilities / Syncthing
Free, open-source, peer-to-peer continuous file sync — no central server, no account, your data stays on your own devices.
Our take
A fundamentally different model from Dropbox-style sync: Syncthing connects your devices directly over an encrypted, authenticated connection and keeps folders in sync between them, with no company-run server in the middle and no account to create. That means no cloud storage tier to buy, but also no web access to your files from a browser — it only syncs between devices you control. Development is stewarded by the nonprofit Syncthing Foundation, with commercial support and engineering resources sponsored by Kastelo Inc. The project has shipped continuously since its 2013 release and is entirely open source on GitHub.
- Price
- Free
- License
- Open source
- Requires
- No specific minimum macOS version is published on the project site; current builds target recent macOS releases.
- Get it via
- Homebrew · Direct
- Developer
- The Syncthing Foundation
Do you use Syncthing?
Who made this
Are you The Syncthing Foundation? Claim this profile to add a photo, a bio, and links — or ask us to remove it.
What it does
Direct device-to-device sync
Files sync straight between your devices over an encrypted, authenticated connection — no third-party server holds your data.
Cross-platform
Runs on macOS, Windows, Linux, BSD, and Solaris, with a browser-based local config UI.
Selective folder sharing
Sync as many folders as you want, each shared with only the specific devices you choose.
The deal
- Free, open source (Mozilla Public License 2.0)
- No account or subscription of any kind
- Optional paid commercial support available separately through Kastelo Inc.
Worth knowing: Syncthing only synchronizes files between your own devices — there is no company-hosted cloud storage, web dashboard for remote file access outside your devices, or customer support line; help comes from the community forum or Kastelo’s paid commercial support.
Syncthing — questions people ask
Is Syncthing free?
Yes — free and open source, with no paid tier for the software itself. Optional commercial support is sold separately by Kastelo Inc.
Does Syncthing store my files in the cloud?
No — it syncs files directly between your own devices with no central server or company-hosted storage involved.
Who makes Syncthing?
The Syncthing Foundation, a nonprofit; Kastelo Inc. sponsors development and offers paid commercial support.
Is Syncthing free?
Yes — Syncthing is free.
Does Syncthing work alongside a notch app like Alcove?
Yes — Syncthing lives in the screen, so it runs happily alongside any Dynamic Island hub or notch app.
Where can I download Syncthing?
Syncthing is available via Homebrew, Direct.
Is Syncthing open source?
Yes — Syncthing is open source.
Reviews
No public ratings yet. Reader reviews are coming to Kitsmith soon.
Listing hand-verified September 18, 2026 from the developer's site and public sources.
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