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.
Features
Properties
- Lightweight
- Privacy focused
Features
- File Sync
- Selective Synchronization
- AES-256 Encryption
- Ad-free
- Works Offline
- Portable
- No registration required
- End-to-End Encryption
- No Tracking
- Support for Rsync
- Dark Mode
- Decentralized
- Duplicate File Finder
- Large File Transfer
- Cross-Platform
- AES Encryption
- Team Collaboration
Tags
- avalonia
- syncronization
- Backup
- avaloniaui
- azure-functions
- backup-utility
ByteSync News & Activities
Recent activities
paul-fresquet added ByteSync as alternative to Beyond Compare, ZBackup, Emborg and Restic- paul-fresquet thinks AES-256 Encryption is a important feature of ByteSync
- paul-fresquet replied to a comment / review on ByteSync
- paul-fresquet updated ByteSync
- astral_cyborg added Works Offline as a feature to ByteSync
- astral_cyborg rated ByteSync
- astral_cyborg liked ByteSync
- TBayAreaPat commented on ByteSync
Crashes when I load C drive as directory, but FreeFileSync can handle it.
ByteSync information
Developed by
POW-SoftwareLicensing
Open Source (MIT) and Free product.Written in
Alternatives
13 alternatives listedSupported Languages
- English
- French
AlternativeTo Categories
Backup & Sync, Security & Privacy, File Management, File Sharing, Office & Productivity, OS & Utilities, Remote Work & EducationGitHub repository
- 129 Stars
- 6 Forks
- 6 Open Issues
- Updated
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.
Comments and Reviews
Crashes when I load C drive as directory, but FreeFileSync can handle it.
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.