Resilio Sync

ApplicationResilio, Inc.

Also called bittorrent sync, btsync, resilio

Resilio, Inc.Productivity

BitTorrent-based folder sync, formerly BitTorrent Sync. The process is Resilio Sync.exe. It is not Syncthing.

What you need to know

Resilio Sync is the BitTorrent Sync line. Syncthing is a different open-source engine.

Resilio Sync.exe shares folder keys. syncthing.exe shares device IDs. A BTSync-era guide is this product. It is not Syncthing.

What is it?: Peer-to-peer sync
Still current?: Yes, see Current status
Official download?: Use the vendor link in this article

Feex says

If the window says Resilio Sync, I would use a Resilio key, not a Syncthing device ID. Those peers will never connect.

What is Resilio Sync?

Resilio Sync is Resilio, Inc.'s peer folder sync. Resilio Sync.exe is the Windows app. Syncthing is syncthing.exe and a different protocol. Dropbox is a hosted cloud.

If you have never used it

If you used BitTorrent Sync a decade ago, this is Resilio Sync, not Syncthing. Download it from resilio.com/individuals. You share a folder key or link. Syncthing uses device IDs and an MPL engine. Resilio Sync.exe is a commercial BitTorrent-family client. They are not protocol-compatible.

What is it used for?

Share a folder key

Read-only or read-write keys Resilio documents. Syncthing pairs device IDs instead.

LAN and internet peers

BitTorrent-family transfer. Syncthing's protocol is not this swarm.

Home versus Business builds

Paid SKUs add admin features. Syncthing does not sell this license ladder.

Who is it for?

People migrating from BitTorrent Sync
Users who want a commercial P2P client
Anyone who should not paste a Syncthing device ID into Resilio

Current status

Actively developed. This article is the Windows desktop app, not Resilio Connect enterprise agents.

How old is it?

BitTorrent Sync launched in 2013 and was rebranded Resilio Sync. Syncthing is a separate 2013 open-source project. A "BTSync" shortcut is this product's old name, not Syncthing.

Versions

Major channels first. Exact build numbers are not all verified here.

Resilio Sync Home

Home Pro / Business

BitTorrent Sync (old name)

System requirements

Values follow the publisher's public guidance. Workload still changes the real need.

Minimum

Minimum system requirements
Operating system	A current supported Windows 10 or Windows 11 release, per the vendor
RAM	Enough for Windows plus this app. Heavy projects want more.

Resource profile

CPU demand: Follows what you open inside the app
RAM demand: Follows documents, tabs, or libraries

Installed processes

These executables belong to this product when it is installed.

Installed processes
Resilio Sync.exe	Resilio Sync desktop

Startup components

Resilio Sync can start with Windows from its own setting. That is not syncthing.exe.

File locations

Common Resilio Sync locations
Typical install	C:\Program Files\Resilio Sync\Resilio Sync.exe

File formats

whatever folders you share

Common problems

Old BTSync config

Import or recreate shares in Resilio. Syncthing cannot read those keys.

Peer never appears

Firewall, key type, or a stale link. That is Resilio, not a Syncthing discovery server.

Getting unstuck

Create the share in Resilio and send a Resilio link

A Syncthing ID will not work. That is the sibling-swap test.

Install from resilio.com/individuals

A "BitTorrent Sync" third-party zip is stale malware risk. Syncthing.net is the other project.

Check Home versus Pro if a feature is missing

Resilio gates some options. Syncthing's settings will not enable them.

Alternatives

Syncthing, Dropbox, and GoodSync overlap. Syncthing is the open-source sibling this article is not.

Official help and downloads

Start with the vendor. Random exe sites are not a support channel.

Official contacts
Download	www.resilio.com/individuals/ Official installer or vendor page
Help	help.resilio.com/ Vendor support
Official site	www.resilio.com/individuals/ Start here, not a random exe host

Related hardware

Large trees want disk and a stable LAN. Relays cost time on a weak WAN.

Technical details

Vendor version numbers change. This article does not pin a build.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. How we research.

Resilio Sync official site · Vendor product page
Resilio Sync help · Vendor support
Resilio Sync help · Keys, peers, and Windows client
Foxhole process map · First-party samples on Windows PCs. Not a lab benchmark.

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