The 9 Best File Sync in 2026

Unison File Synchronizer

Bidirectional file sync for Windows, macOS and Linux

Free

Best for: Developers and sysadmins needing true bidirectional cross‑platform file sync

rclone

Sync and manage files across cloud storage from the command line

Free

Best for: Developers and power users needing scriptable multi‑cloud sync

Resilio Sync

Fast, reliable, and secure file synchronization powered by BitTorrent technology.

Freemium

Best for: IT professionals and teams moving large files.

FreeFileSync

Free open‑source file sync and backup for Windows, macOS and Linux

Free

Best for: Users needing free, local file sync across Windows, macOS, Linux

GoodSync

Secure and reliable file synchronization and backup software for all devices.

Paid (Subscription)

Best for: IT professionals managing complex multi-destination backups and large file hierarchies.

Sync-in

Self-hosted, open-source platform for file sync and document collaboration

Free

Best for: Technical teams that want a self-hosted Dropbox/Nextcloud alternative with real-time document editing

Android-DataBackup

Simple, free backup and restore for all your Android data

Free

Best for: Android users who want free, on-device backup with selective restore

SyncBack

Reliable backup, synchronization, and restoration software for Windows.

Freemium

Best for: Windows users needing highly configurable cloud backup and synchronization profiles.

Syncplicity

Secure enterprise file sync and share for any device

Paid (Subscription)

Best for: Enterprises requiring robust security, compliance, and hybrid cloud deployment