ByteSync icon
ByteSync icon

ByteSync

Free and open-source differential file synchronization software for Windows, macOS, and Linux. ByteSync securely compares and transfers only file differences — no VPN, no setup, just fast, encrypted, cross-platform sync and backup.

ByteSync screenshot 1

Cost / License

  • Free
  • Open Source (MIT)

Application type

Platforms

  • Mac
  • Windows
  • Linux
ByteSync alternatives  
5likes
14alternatives
0articles

Features

Properties

  1.  Lightweight
  2.  Privacy focused
  3.  Decentralized

Features

  1.  File Sync
  2.  Selective Synchronization
  3.  AES-256 Encryption
  4.  Ad-free
  5.  Works Offline
  6.  Portable
  7.  No registration required
  8.  End-to-End Encryption
  9.  No Tracking
  10.  Support for Rsync
  11.  Dark Mode
  12.  Duplicate File Finder
  13.  Large File Transfer
  14.  Cross-Platform
  15.  AES Encryption
  16.  Team Collaboration

 Tags

ByteSync News & Activities

Highlights All activities

Recent activities

Ad
Screenshot
pCloud icon
pCloud

pCloud is a cloud-based storage solution that centralizes and makes digital content like images, videos, and documents accessible from any device, anywhere. It also allows file sharing with managed access permissions.

 
Learn More

ByteSync information

AlternativeTo Categories

Backup & Sync, Security & Privacy, File Management, File Sharing, Office & Productivity, OS & Utilities, Remote Work & Education

GitHub repository

  •  167 Stars
  •  10 Forks
  •  51 Open Issues
  •   Updated  
View on GitHub

Popular alternatives

View all

Our users have written 1 comments and reviews about ByteSync, and it has gotten 5 likes

ByteSync was added to AlternativeTo by paul-fresquet on and this page was last updated .

Comments and Reviews

   
TBayAreaPat
1

Crashes when I load C drive as directory, but FreeFileSync can handle it.

paul-fresquet

Thanks for the report. Actually, there are two problems here: first, a crash when selecting the root of a drive. This issue is currently being fixed. Second, there is a known limitation when scanning protected directories without admin privileges. I've created GitHub issue #229 (https://github.com/POW-Software/ByteSync/issues/229) to track this. I plan to allow the inventory to continue scanning accessible paths while tracking inaccessible directories for exclusion from sync. This will be addressed in a future release.

paul-fresquet

Hi,

This is now fixed with version 2026.1.

Official Links

AppStores & Other Links

Download from Microsoft Store

What is ByteSync?

ByteSync is a free and open-source software designed for secure and efficient file synchronization and backup across multiple computers. Instead of copying entire files, ByteSync compares data at the block level and transfers only the differences, saving time and bandwidth while ensuring precise synchronization.

Thanks to its decentralized architecture, each instance analyzes its own data locally before cooperating with others through a lightweight orchestration layer. This design enables powerful multi-site synchronization, remote backups, and data deduplication, all without requiring VPNs, port forwarding, or complex network setup.

Every exchange is protected with end-to-end encryption, guaranteeing full confidentiality and integrity. ByteSync runs on Windows, macOS, and Linux, offering a seamless experience for both individuals and teams managing distributed files, codebases, or large datasets.

With its intuitive interface and flexible synchronization rules, ByteSync gives you complete control over your backups and transfers — from quick comparisons to complex multi-node workflows. Whether you’re syncing projects between offices or maintaining secure archives, ByteSync makes it effortless, fast, and reliable.

ByteSync Videos