One Toolkit for Sync, Deduplication & Backup Support
ByteSync combines synchronization, deduplication and simple backup workflows in a single, deploy‑in‑minutes toolkit. Seamlessly connect local and remote nodes, accelerate transfers with delta technology, eliminate duplicate data and protect everything with AES‑256 encryption.
Sync & Dedup, LAN or WAN
Synchronize and deduplicate data across machines in a single session.
ByteSync automatically handles local and remote connections, letting you work without VPNs or open ports while keeping your datasets clean and consistent.
ByteSync automatically handles local and remote connections, letting you work without VPNs or open ports while keeping your datasets clean and consistent.
Consistency & Consolidation
Compare datasets, verify consistency, and consolidate multiple sources with precision.
ByteSync identifies differences, missing items, and redundant data, giving you full control to clean, merge, and validate your datasets.
ByteSync identifies differences, missing items, and redundant data, giving you full control to clean, merge, and validate your datasets.
Fast Analysis & Delta Sync
Two‑stage inventory and Smart/Checksum modes detect only changed data. ByteSync sends just the necessary deltas, cutting synchronization time and bandwidth usage.
Multi‑Node, Unlimited Sources
Run a session across up to five devices, each with multiple DataNodes and unlimited sources. Map folders locally or remotely and synchronize only what matters.
Advanced Filtering & Automation
Powerful filters by name, date, size or status surface exactly what matters. Define targeted actions or global rules to automate and repeat precise synchronizations.
Security, Privacy & Open Source
Encrypt every transfer with AES‑256 and verify each client with digital signatures. ByteSync’s open‑source code invites engineers to audit, contribute and trust its privacy guarantees.
ByteSync in Action
Watch how ByteSync synchronizes and deduplicates your data in seconds.
See the full workflow — from session setup to delta sync — in one unified tool.
See the full workflow — from session setup to delta sync — in one unified tool.
What You Can Do with ByteSync
Whether you’re working across offices, cleaning up legacy storage, moving terabytes or auditing sync states — ByteSync is the engine that makes it possible. Choose what you need to solve next.
Keep every site in sync without servers or VPNs
Multi‑Site Sync & Backup Support
Mirror or split data across several remote machines in a single operation.
ByteSync uses encrypted intermediary buffers so you upload your data only once, and each target retrieves it efficiently and securely.
ByteSync uses encrypted intermediary buffers so you upload your data only once, and each target retrieves it efficiently and securely.
Eliminate redundant files before you hit “sync”
Deduplication & Data Cleanup
Advanced filtering can isolate duplicates or obsolete temp/log files across sources.
By comparing content and size, you can remove identical files or skip outdated data, saving storage and bandwidth for what really matters.
By comparing content and size, you can remove identical files or skip outdated data, saving storage and bandwidth for what really matters.
Move big projects efficiently across offices
Delta‑Based Large Project Sync
ByteSync’s two‑phase inventory and delta transfer technology send only the changed blocks of large files.
Combined with intelligent batching for small files, it accelerates multi‑gigabyte transfers while preserving full control over when and what you sync.
Combined with intelligent batching for small files, it accelerates multi‑gigabyte transfers while preserving full control over when and what you sync.
Gain clarity before acting
Data Integrity Audit & Pre-Sync Validation
Explore and validate your datasets before synchronizing or backing them up.
Identify missing files, outdated items, duplicates or anomalies, then take targeted actions to consolidate your data with confidence..
Identify missing files, outdated items, duplicates or anomalies, then take targeted actions to consolidate your data with confidence..
Privacy & Security
ByteSync protects your files at every step, offering state-of-the-art encryption, verified connections, and the confidence of open-source technology.
End-to-End Encryption: Every file transferred via ByteSync is encrypted using AES-256 before transmission, ensuring that only authorized clients can decrypt and access the data.
Trusted Client Management: ByteSync verifies the identity of clients through digital signatures, ensuring that only trusted devices can participate in synchronization sessions.
Open Source Transparency: ByteSync is open source, allowing anyone to review, audit, and contribute to its development.
Download ByteSync
ByteSync is free, simple, and anonymous.
No sign-up, no credit card. Just download and sync!
No sign-up, no credit card. Just download and sync!
Windows
via Microsoft Store:
Installable version:
Portable version:
Linux
via Homebrew:
brew tap POW-Software/bytesync
brew install bytesync
Portable version:
macOS
via Homebrew:
brew tap POW-Software/bytesync
brew install --cask bytesync
Portable version:
ByteSync: A Smart Alternative to Traditional Sync & Backup
Compare ByteSync with classic solutions like FTP, FreeFileSync, Syncthing, or rsync — and see how it combines block-level efficiency, multi-node orchestration, and end-to-end encryption in one simple tool.
ByteSync stands out by making remote and local synchronization easier, faster, and fully secure — without VPNs, ports, or complex setup
ByteSync stands out by making remote and local synchronization easier, faster, and fully secure — without VPNs, ports, or complex setup
| Feature | ByteSync | FTP/SFTP Backup | FreeFileSync | Syncthing |
|---|---|---|---|---|
| Delta-based transfers Transfers only modified parts — faster, lighter, and bandwidth-friendly. | ✅Transfers changed blocks only | ❌ Usually full files only; no delta | ⚠️ Local only; slower remote | ✅ Continuous delta replication |
| Multi-node orchestration Sync multiple machines in one session — no servers, no complex setup. | ✅ Up to 5 DataNodes per session | ❌ One client ↔ one server | ⚠️ Multi-pairs, no orchestration | ❌ Peer-to-peer only |
| Analysis mode & performance Distributed comparison for faster syncs on large datasets. | ✅ Decentralized, local analysis, fast on large sets | ❌ Centralized via server | ⚠️ Slow on remote paths | ⚠️ Continuous indexing |
| Flat Mode Sync by filename only — perfect for scattered or cross-path projects. | ✅ Unique flat mode | ❌ Keeps original paths | ❌ No flat mode | ❌ Folder structure fixed |
| Selective control & synchronization rules Target specific files with precise filters and automation rules. | ✅ Fine-grained rules | ❌ Basic include/exclude | ⚠️ Simple filters only | ❌ Auto-sync, no rules |
| End-to-end encryption All transfers encrypted and verified between trusted clients. | ✅ Full AES-256 + trust validation | ⚠️ FTP unencrypted / SFTP limited | ⚠️ Depends on protocol | ✅ Encrypted via TLS |
| Open-source Software Open, transparent, and community-driven for full control and trust. | ✅ Open-source | ⚠️ Depends on client | ✅ Open-source | ✅ Open-source |
Delta-based transfers
Only changed parts move — faster, lighter sync.
ByteSync: Transfers changed blocks only
FTP/SFTP: Usually full files
FreeFileSync: Mostly efficient locally
Syncthing: Continuous block-level
Multi-node orchestration
Sync multiple sites in one session.
ByteSync: Up to 5 DataNodes per session
FTP/SFTP: One client ↔ one server
FreeFileSync: Pair-by-pair, no orchestration
Syncthing: P2P per folder, no sessions
Flat Mode
Match by file name, not folder tree.
ByteSync: Unique flat sync option
FTP/SFTP: Keeps original paths
FreeFileSync: No flat mode
Syncthing: No flat mode
Selective control & sync rules
Choose exactly what to sync with rules & actions.
ByteSync: Filters, targeted actions, conditional rules
FTP/SFTP: Basic include/exclude only
FreeFileSync: Filters + simple modes (no rule engine)
Syncthing: Auto-sync, no user rules
Analysis mode
Smarter inventory = fewer remote round-trips.
ByteSync: Decentralized: local scans, compare, hash only if needed
FTP/SFTP: Centralized remote listing
FreeFileSync: Local OK, slower on remote paths
Syncthing: Continuous indexing in background
End-to-end encryption
Data stays private between trusted clients.
ByteSync: E2EE + trusted clients
FTP/SFTP: Depends (FTP none, SFTP yes, no trust model)
FreeFileSync: Depends on transport
Syncthing: Encrypted P2P (TLS)
IN-DEPTH
Complete Insight Across All Your Endpoints
From a single pane you’ll immediately see differences, duplicates and matches across up to five remote machines. Dive into pre-sync analysis with powerful filters—include or exclude by name, size, date or status—to home in on exactly the files you care about, before you ever transfer a byte.
IN-DEPTH
Precision Actions or Automated Rules
Take direct control at the file or folder level with targeted actions, or define if-this-then-that rules to enforce complex conditions across every endpoint. Whether you need one-off adjustments or hands-off automation, ByteSync delivers surgical accuracy and repeatable workflows at scale.
