Resilio Sync

Resilio Sync is a cloudless, peer-to-peer synchronisation and file-sharing application for people who want files to remain on their own devices. It is best suited to personal users managing several computers, phones or NAS systems, particularly when sharing permissions and selective downloads matter more than a conventional cloud drive.

Overview

Sync’s main advantage is direct control over how files are distributed. You can send files to several recipients without exposing an entire folder or establishing a permanent synchronisation relationship. That is a practical fit for occasional hand-offs as well as continuing device-to-device folders.

Advanced Folders add ownership controls, revocable access, and separate read and write permissions. Those options make Sync more suitable for changing family or personal projects than a basic transfer utility. Resilio describes the design as cloudless: files remain on participating devices. When a relay is needed, the data travels through it encrypted and is not stored there. Resilio cites AES-128 encryption in transit and X.509 certificates for mutual authentication.

The important qualification is licensing. Sync 3.0 is restricted to personal, non-commercial use, so it is not the appropriate edition for a company, paid service, or other business workflow.

Key features

• Selective Sync: Searchable placeholder files let you see what is available and download only required items. This helps devices with limited local storage avoid carrying every file in a synchronised folder.
• Flexible sending: Files can go to multiple recipients without granting access to a whole folder or leaving a lasting sync connection. It is useful for controlled, one-off distribution.
• Advanced Folders: Ownership assignment, read and write changes, and access revocation provide meaningful control when several people or devices share content.
• Bandwidth limits: You can cap Sync activity, making it easier to keep synchronisation from consuming an entire connection.
• Remote and web controls: The Sync 3.0 plan includes a web interface and remote control, alongside DHT support for peer-to-peer discovery.
• Device-local storage: Keeping files on users’ devices can appeal to readers who do not want a hosted copy, although the participating devices must be available for transfers.

Pricing

There is no free trial because the personal plan is free, and no paid seat or storage quota is stated. The no-expiration term suits long-running personal archives, but activation still requires a license. Commercial users are directed to Sync v2 or Resilio business solutions instead, so organisations should not treat the free Sync 3.0 download as a business plan.

Platforms

Sync 3.0 supports Windows, macOS, Linux, iOS, Android and NAS devices. Desktop downloads cover Windows 64-bit 7 or later, OS X 10.13 or later, Linux x64, Linux x64 with glibc 2.3, and Linux ARM64. Separate mobile and NAS downloads are provided; NAS packages carry the same personal, non-commercial restriction.

Who it's for

Choose Sync if you want peer-to-peer transfers across your own computers, phones and NAS, need folder-level permissions, or prefer selective local downloads over keeping a complete copy everywhere. It is particularly compelling for personal media, documents and device backups where cloudless storage is a priority.

Look elsewhere if the software will be used commercially, if you need a hosted cloud repository rather than device-to-device availability, or if you require a business licence with terms beyond the personal restriction.

Pros and cons

Pros

• Granular sharing: Ownership, read/write permissions and revocation are more useful than an all-or-nothing folder share.
• Storage efficiency: Selective Sync downloads only chosen files while retaining searchable placeholders.
• Network control: Bandwidth limits help keep transfers from overwhelming a connection.
• Broad device coverage: Windows, macOS, Linux, mobile and NAS support enables mixed-device setups.
• Device-local model: Files stay on users’ devices, with encrypted relay transit rather than relay storage.

Cons

• Personal use only: Sync 3.0 cannot be used commercially, which removes it from consideration for business deployments.
• Activation required: Even the free plan needs a licence to activate.
• Device dependence: A cloudless design means transfers rely on participating devices and their availability.
• NAS restriction: NAS packages are also limited to personal, non-commercial use.

Alternatives

Feem is the better pick for a simpler freemium transfer option spanning Android, iOS, Linux, macOS, web and Windows; its free plan allows unlimited file transfers, while Feem Pro iOS costs $4.99 a year and renews manually.

TorrServer suits readers seeking a self-hosted torrent streaming server under the GPL-3.0 licence, with Android, iOS, Linux, macOS, web and Windows coverage.

BiglyBT is a free software choice for torrent-focused use on Android, Linux, macOS, web and Windows.

BitComet is free for private personal, non-commercial use across Android, Linux, macOS, self-hosted, web and Windows.

aMule is a GPL-2.0 option with no telemetry or advertisements, supporting Linux, macOS, self-hosted and web deployments.

qBittorrent is free, open source and ad-free, with Linux, macOS, self-hosted and web support.

Transmission includes all features in its free plan, with no ads or tracking, across Linux, macOS, self-hosted, web and Windows.

WebTorrent is a non-profit, open-source MIT-licensed option; its free desktop edition is non-commercial.

For broader discovery, browse the Peer-to-Peer File Sharing Software category.

Verdict

Resilio Sync is a strong choice for personal users who need selective downloads, adjustable folder permissions and direct device-to-device sharing across a broad platform mix. Its clearest reason to look elsewhere is the personal, non-commercial licence and required activation, which make a business-oriented or hosted alternative a better fit for professional use.