Sync, Backup & Deduplication — Cross-platform, LAN & WAN

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🌀 ByteSync

Free, open-source software for file synchronization, backup & deduplication — local or remote, secure, and cross-platform.
No VPN. No setup. Full control.

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🔍 Overview

ByteSync is an on-demand file synchronization, backup and deduplication tool designed for professionals, teams, and individuals.
It works locally or across remote sites with no VPN, firewall, or manual configuration required.

ByteSync compares files using a block-level delta engine and transfers only modified parts, saving time and bandwidth.
All data is protected with end-to-end encryption (E2EE), ensuring privacy even when synchronization passes through remote connections.

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🧠 Key Features

• ⚡ Hybrid synchronization — works across LAN and remote endpoints automatically.
• 🔒 End-to-end encryption — no data ever leaves your devices unencrypted.
• 📦 Delta-based transfers — only modified data blocks are exchanged.
• 🧩 Backup & deduplication — compare, clean, and consolidate datasets easily.
• 💻 Cross-platform — runs on Windows, Linux, and macOS.
• 🚫 Zero network configuration — no VPN, no port forwarding, no hassle.
• ⚙️ Rule-based control — define granular synchronization conditions and actions.
• 🧾 Transparent results — full comparison and report before applying changes.

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🌍 How It Works

ByteSync automatically detects the best route between endpoints:

• Local peers communicate directly through LAN for maximum speed.
• Remote peers connect securely through encrypted relay channels.
• You can mix local and remote endpoints in the same session effortlessly.

This hybrid model makes ByteSync ideal for distributed setups, multi-site businesses, or personal backups.

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🧰 Use Cases

• 🏢 Small Business: synchronize local servers and remote backup sites.
• 💾 IT Teams: keep distributed datasets consistent across multiple environments.
• 🏠 Home Users: sync between PC, NAS, and cloud backup targets.
• 🧹 Deduplication: identify and remove duplicate files using filtering and rule-based actions.
• 🎬 Creative Studios: collaborate efficiently on large media files with delta-based transfers.

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📷 Gallery

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🧩 Installation

Download the Precompiled Client

1. Visit our official website.
2. Download the right version for your operating system.

Building from Source

If you prefer to build ByteSync from source or want to deploy specific components:

• For client-side deployment steps, refer to docs/client-deployment.md.
• For server-side deployment steps, refer to docs/server-deployment.md.

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🧑‍💻 Support

If you encounter any issues or if you have feature requests, please open an issue on GitHub.

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🛡️ License

This project is licensed under the MIT License.