# Resilio Sync

Application: Resilio, 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

| 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.

| 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

| 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.

| Download      | [www.resilio.com/individuals/ ](https://www.resilio.com/individuals/)Official installer or vendor page |
| ------------- | ------------------------------------------------------------------------------------------------------ |
| Help          | [help.resilio.com/ ](https://help.resilio.com/)Vendor support                                          |
| Official site | [www.resilio.com/individuals/ ](https://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

Technical details

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

## Related

These entities connect to this article. Type is shown on every link.

[Syncthing: Application](https://feex.it/wiki/software/syncthing)[How to read Task Manager: Guide](https://feex.it/wiki/software/system/how-to-read-task-manager)

## Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. [How we research](https://feex.it/wiki/research).

- [Resilio Sync official site ](https://www.resilio.com/individuals/)· Vendor product page
- [Resilio Sync help ](https://help.resilio.com/)· Vendor support
- [Resilio Sync help ](https://help.resilio.com/hc/en-us)· Keys, peers, and Windows client
- [Foxhole process map ](https://foxhole.feex.it/)· First-party samples on Windows PCs. Not a lab benchmark.

## Was this article useful?

A yes or no is enough. Pick a reason if you want, or add a short note.

Quick facts

The short identity of this page. Specs, sources, and the full story stay in the article.

- **Developer**: Resilio, Inc.

  **Category**: Peer-to-peer sync

  **Process**: Resilio Sync.exe

  **License**: Free Home features plus paid Home Pro / Business

  **First released**: 2013

  **Official site**: [resilio.com](https://www.resilio.com/individuals/)

  **Mapped by Feex**: Seen on Windows PCs in Foxhole

Feex Reviewed: Last verified August 2026

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Source: [Canonical Feex Wiki page](https://feex.it/wiki/software/resilio-sync/)

[Developer guide](https://feex.it/wiki/developers/) | [API policy](https://feex.it/developers/api-policy/) | [Agent guidance](https://feex.it/wiki/llms.txt)