Advertising disclosure: Empire Reviews is reader-supported. Some links on this page are affiliate links — if you buy through them we may earn a small commission at no extra cost to you. This never affects our rankings. The honest best product is always shown first, even when it earns us nothing. Full disclosure & FTC policy.
Check current priceWe do not currently hold an affiliate link for this product. It is reviewed and ranked purely on merit.
Reviewed by The Empire Reviews Editorial Team — Product testing & research.
We are a small in-house team that buys, uses and stress-tests every product before it is ranked. We have no sponsored placements: brands cannot pay for a higher position. When a cheaper or unaffiliated product is genuinely better, we say so and rank it first. How we test →
Updated June 2026
Syncthing: The Best Free File Sync Tool
Syncthing is a free, open-source, peer-to-peer file synchronisation tool -- a self-hosted Dropbox alternative. Honest review.
What it is
Syncthing continuously syncs files directly between your own devices over an encrypted connection, with no cloud server in the middle and no storage limits beyond your own disks.
It is open-source and free; there is no paid tier because there is no company selling storage -- your devices are the storage.
What you get for free
Entirely free and open-source. You provide the disks.
Who it is for
Privacy-minded users who want device-to-device sync without a cloud subscription.
Our take
If you are comfortable with a little setup, it replaces paid cloud sync for free. Recommended on merit.
Check current priceWe do not currently hold an affiliate link for this product. It is reviewed and ranked purely on merit.
Reviewed by The Empire Reviews Editorial Team — Product testing & research.
We are a small in-house team that buys, uses and stress-tests every product before it is ranked. We have no sponsored placements: brands cannot pay for a higher position. When a cheaper or unaffiliated product is genuinely better, we say so and rank it first. How we test →