Quick Overview
- 1#1: GoodSync - Automatically synchronizes and backs up files across local drives, mobile devices, and cloud storage with real-time monitoring and versioning.
- 2#2: Syncthing - Open-source peer-to-peer file synchronization tool that keeps folders in sync across multiple devices without a central server.
- 3#3: Resilio Sync - Secure, fast file sync software using BitTorrent technology for selective synchronization across all devices.
- 4#4: FreeFileSync - Free open-source tool for comparing and synchronizing files and folders on Windows, macOS, and Linux.
- 5#5: SyncBack - Versatile backup and synchronization software supporting local, network, FTP, and cloud destinations with scripting.
- 6#6: Duplicati - Free backup client that stores encrypted, incremental backups and supports synchronization to local or cloud storage.
- 7#7: Acronis Cyber Protect Home Office - Comprehensive backup solution with file sync, disk imaging, ransomware protection, and cloud integration.
- 8#8: IDrive - Cloud backup service offering continuous file sync, versioning, and multi-device support with generous storage.
- 9#9: Backblaze - Unlimited cloud backup for personal computers with easy file access, sync, and restore capabilities.
- 10#10: Bvckup 2 - Lightweight, real-time backup software focused on fast mirroring and versioning for local and network folders.
We evaluated tools based on functionality (including real-time monitoring, versioning, and cross-platform support), reliability (data integrity, security), user experience (intuitive interfaces, setup), and value (cost, storage, and scalability), ensuring a balanced selection that caters to both casual users and power users.
Comparison Table
This comparison table examines popular sync backup software, featuring GoodSync, Syncthing, Resilio Sync, FreeFileSync, SyncBack, and more, outlining core features, performance, and ideal use cases. Readers will discover critical differences to help select the right tool for their synchronization and backup needs.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | GoodSync Automatically synchronizes and backs up files across local drives, mobile devices, and cloud storage with real-time monitoring and versioning. | other | 9.5/10 | 9.8/10 | 8.7/10 | 9.2/10 |
| 2 | Syncthing Open-source peer-to-peer file synchronization tool that keeps folders in sync across multiple devices without a central server. | other | 9.1/10 | 9.0/10 | 8.5/10 | 10/10 |
| 3 | Resilio Sync Secure, fast file sync software using BitTorrent technology for selective synchronization across all devices. | other | 8.7/10 | 9.2/10 | 8.5/10 | 9.0/10 |
| 4 | FreeFileSync Free open-source tool for comparing and synchronizing files and folders on Windows, macOS, and Linux. | other | 9.2/10 | 9.5/10 | 8.0/10 | 10/10 |
| 5 | SyncBack Versatile backup and synchronization software supporting local, network, FTP, and cloud destinations with scripting. | other | 8.2/10 | 9.0/10 | 7.0/10 | 8.5/10 |
| 6 | Duplicati Free backup client that stores encrypted, incremental backups and supports synchronization to local or cloud storage. | other | 8.2/10 | 8.8/10 | 7.0/10 | 9.5/10 |
| 7 | Acronis Cyber Protect Home Office Comprehensive backup solution with file sync, disk imaging, ransomware protection, and cloud integration. | other | 8.1/10 | 9.2/10 | 7.4/10 | 7.6/10 |
| 8 | IDrive Cloud backup service offering continuous file sync, versioning, and multi-device support with generous storage. | other | 8.1/10 | 8.5/10 | 7.8/10 | 8.9/10 |
| 9 | Backblaze Unlimited cloud backup for personal computers with easy file access, sync, and restore capabilities. | other | 8.2/10 | 7.8/10 | 9.2/10 | 9.5/10 |
| 10 | Bvckup 2 Lightweight, real-time backup software focused on fast mirroring and versioning for local and network folders. | other | 8.2/10 | 7.8/10 | 8.5/10 | 9.5/10 |
Automatically synchronizes and backs up files across local drives, mobile devices, and cloud storage with real-time monitoring and versioning.
Open-source peer-to-peer file synchronization tool that keeps folders in sync across multiple devices without a central server.
Secure, fast file sync software using BitTorrent technology for selective synchronization across all devices.
Free open-source tool for comparing and synchronizing files and folders on Windows, macOS, and Linux.
Versatile backup and synchronization software supporting local, network, FTP, and cloud destinations with scripting.
Free backup client that stores encrypted, incremental backups and supports synchronization to local or cloud storage.
Comprehensive backup solution with file sync, disk imaging, ransomware protection, and cloud integration.
Cloud backup service offering continuous file sync, versioning, and multi-device support with generous storage.
Unlimited cloud backup for personal computers with easy file access, sync, and restore capabilities.
Lightweight, real-time backup software focused on fast mirroring and versioning for local and network folders.
GoodSync
otherAutomatically synchronizes and backs up files across local drives, mobile devices, and cloud storage with real-time monitoring and versioning.
Patented GoodSync Sync Algorithm with intelligent conflict resolution and on-file change detection for zero data loss even in complex, real-time scenarios
GoodSync is a robust file synchronization and backup software designed to keep data consistent across desktops, laptops, servers, NAS devices, mobile devices, and cloud storage services. It supports one-way backups, two-way syncing, and real-time monitoring with automatic change detection and propagation. With features like version history, encryption, compression, and support for protocols such as SMB, FTP, SFTP, WebDAV, and major clouds (Google Drive, OneDrive, S3), it ensures reliable data protection without duplicates or losses.
Pros
- Exceptional reliability with patented sync algorithms and CRC32 verification to prevent data loss
- Broad compatibility across platforms (Windows, macOS, Linux, iOS, Android) and storage types including 40+ cloud services
- Advanced features like real-time sync, block-level transfers, version history (up to 1000 versions), and bandwidth throttling
Cons
- Free version limited to 3 sync jobs and basic features
- Pricing can add up for multi-device or enterprise use
- Steeper learning curve for complex network setups and advanced options
Best For
Power users, IT professionals, and businesses requiring reliable, cross-platform file syncing and automated backups across diverse devices and clouds.
Pricing
Free version with limits; Personal annual license $49.95 (1-5 devices), lifetime $79.95; Business/Enterprise plans from $198/year with volume discounts.
Syncthing
otherOpen-source peer-to-peer file synchronization tool that keeps folders in sync across multiple devices without a central server.
Fully decentralized peer-to-peer synchronization without any central server dependency
Syncthing is a free, open-source peer-to-peer file synchronization tool that keeps folders in sync across multiple devices in real-time without relying on central servers or cloud storage. It uses end-to-end encryption for secure data transfer and supports platforms like Windows, macOS, Linux, Android, and iOS. While primarily designed for continuous syncing, it can serve as a backup solution by maintaining identical file copies across devices, with optional versioning via filesystem features.
Pros
- Decentralized P2P sync ensures privacy and no vendor lock-in
- End-to-end encryption and robust cross-platform support
- Highly customizable with ignore patterns and selective syncing
Cons
- Initial device pairing and configuration can be technical
- Limited built-in versioning (relies on external tools or filesystem)
- Higher resource usage on mobile devices during active sync
Best For
Privacy-focused tech-savvy users needing reliable, serverless file syncing and backup across personal devices.
Pricing
Completely free and open-source with no paid tiers or subscriptions.
Resilio Sync
otherSecure, fast file sync software using BitTorrent technology for selective synchronization across all devices.
Decentralized peer-to-peer sync that bypasses cloud servers for direct device-to-device transfers
Resilio Sync is a peer-to-peer file synchronization tool that enables direct, serverless syncing of files and folders across devices using BitTorrent-inspired technology for efficiency and speed. It supports selective syncing, permissions, and end-to-end encryption, making it suitable for personal, team, or NAS-based setups. While excellent for real-time sync across platforms like Windows, macOS, Linux, Android, iOS, and routers, it functions best as a backup when paired with always-on devices rather than as a standalone cloud solution.
Pros
- Lightning-fast P2P transfers optimized for large files and low bandwidth
- Strong end-to-end encryption and granular folder permissions
- Broad cross-platform support including mobile, desktop, NAS, and routers
Cons
- Sync only works when source and target devices are online
- Lacks built-in cloud storage or offsite backup redundancy
- Unlimited folders and advanced features require paid upgrade
Best For
Users syncing large datasets across their own devices, NAS, or local networks who prioritize speed and privacy over cloud-based backups.
Pricing
Free basic version; Sync Home Pro $59.99 one-time purchase; Business from $60/user/year.
FreeFileSync
otherFree open-source tool for comparing and synchronizing files and folders on Windows, macOS, and Linux.
Intelligent detection of moved and renamed files to avoid redundant copying
FreeFileSync is a free, open-source folder comparison and synchronization tool available for Windows, macOS, and Linux. It enables users to mirror, update, or perform two-way syncs between local folders, network drives, FTP/SFTP servers, and cloud services like Google Drive. The software includes a visual file comparison viewer, supports detecting moved/renamed files, and offers batch jobs for automated backups.
Pros
- Completely free with no feature limitations or ads
- Advanced sync algorithms detect moves, renames, and conflicts
- Cross-platform support and portable version for easy deployment
Cons
- Dated user interface with a learning curve for beginners
- Scheduling requires external tools or batch setup
- Limited native cloud integrations beyond basic protocols
Best For
Advanced users and IT admins seeking powerful, cost-free sync for local/network backups.
Pricing
Free (open-source donationware)
SyncBack
otherVersatile backup and synchronization software supporting local, network, FTP, and cloud destinations with scripting.
Advanced scripting engine allowing custom automation and integration with external tools
SyncBack is a robust file synchronization and backup software developed by 2BrightSparks, enabling users to mirror, sync, or back up files across local drives, network locations, USB devices, and numerous cloud services like Google Drive, Dropbox, and OneDrive. It supports advanced features such as versioning, compression, 256-bit AES encryption, scheduling, and real-time monitoring to prevent data loss. Available in free, SE, and Pro editions, it caters to both casual users and IT professionals with customizable profiles and filtering options.
Pros
- Extensive support for local, network, FTP/SFTP, and 20+ cloud services
- Powerful versioning, encryption, compression, and scripting capabilities
- One-time lifetime license with free minor updates
Cons
- Dated user interface that feels clunky compared to modern alternatives
- Steeper learning curve for advanced configurations
- Free version lacks key features like cloud sync and scheduling
Best For
IT professionals and advanced users requiring reliable, customizable sync across diverse storage targets.
Pricing
SyncBackFree (free, basic); SyncBackSE ($59.95 one-time); SyncBackPro ($79.95 one-time per PC).
Duplicati
otherFree backup client that stores encrypted, incremental backups and supports synchronization to local or cloud storage.
Block-level deduplication that intelligently minimizes storage by only backing up unique data chunks
Duplicati is a free, open-source backup software that specializes in secure, incremental backups with deduplication, compression, and AES-256 encryption. It supports a vast array of storage destinations including local drives, NAS, FTP/SFTP, and cloud services like Google Drive, OneDrive, Dropbox, and Amazon S3. While primarily a backup tool, it offers scheduled, versioned syncing capabilities suitable for automated data protection workflows across Windows, macOS, and Linux.
Pros
- Strong deduplication and encryption reduce storage needs and enhance security
- Broad compatibility with numerous cloud and local backends
- Fully free and open-source with no usage limits
Cons
- Web-based UI has a steep learning curve for beginners
- Lacks real-time continuous sync; focused on scheduled backups
- Restores can be complex and resource-intensive
Best For
Tech-savvy users or small teams needing cost-free, secure backups to diverse storage with advanced deduplication.
Pricing
Completely free (open-source, no paid tiers).
Acronis Cyber Protect Home Office
otherComprehensive backup solution with file sync, disk imaging, ransomware protection, and cloud integration.
AI-powered Active Protection that detects and blocks ransomware in real-time during backups and sync operations
Acronis Cyber Protect Home Office is a comprehensive cybersecurity and backup solution designed for home users, combining automated file backups, synchronization across devices, and cloud storage with advanced threat protection. It supports local, NAS, and cloud backups with features like full disk imaging, incremental backups, and real-time file syncing. While not a pure sync tool like Dropbox, it integrates robust security such as AI-driven anti-ransomware and anti-malware directly into the backup process.
Pros
- Integrated cybersecurity like AI anti-ransomware and malware protection
- Reliable multi-destination backups (local, cloud, NAS) with fast incremental sync
- Unlimited mobile backups and cross-device file synchronization
Cons
- Overkill and complex for users needing only basic file sync
- Subscription-only model with higher costs compared to pure sync services
- Resource-intensive on lower-end hardware due to security scanning
Best For
Security-conscious home users who need robust backups and sync with built-in cyber protection rather than lightweight file sharing.
Pricing
Annual subscriptions start at $49.99 for Essentials (250GB cloud, 1 computer + mobiles) up to $99.99 for Advanced (1TB cloud, full features).
IDrive
otherCloud backup service offering continuous file sync, versioning, and multi-device support with generous storage.
Unlimited device backups and private end-to-end encryption with user-managed keys
IDrive is a versatile cloud backup and sync service that enables users to automatically back up files from computers, mobiles, and servers while syncing selected folders across unlimited devices for seamless access. It emphasizes robust backup features like continuous data protection, file versioning up to 30 versions, and disk image backups, making it suitable for both personal and business data protection. The sync functionality keeps designated folders updated in real-time across devices, though it's more backup-focused than pure sync tools.
Pros
- Unlimited devices supported on most plans
- Private encryption with user-controlled keys for top security
- Generous storage (up to 100TB) with versioning and continuous backup
Cons
- Sync lacks the instantaneous speed of dedicated tools like Dropbox
- Desktop app interface feels dated and occasionally buggy
- Advanced features like server backup require higher-tier plans
Best For
Users seeking affordable, high-capacity backup with reliable multi-device sync for personal or small business data.
Pricing
Free 10GB plan; Personal plans from $79.12/year (5TB, first year discount) to $149.12/year (10TB); Business from $12.50/user/year.
Backblaze
otherUnlimited cloud backup for personal computers with easy file access, sync, and restore capabilities.
Unlimited cloud backup storage at a flat per-computer rate, regardless of data volume
Backblaze Personal Backup is a cloud-based service that provides unlimited, automatic backups of your entire computer to secure offsite storage. It continuously scans and uploads changed files in the background, maintaining version history for easy recovery of lost or previous versions of data. While excellent for backup, it lacks real-time multi-device synchronization typical of pure sync tools.
Pros
- Unlimited storage for a flat fee per computer
- Set-it-and-forget-it automatic continuous backups
- Strong version history and reliable restore options including courier service
Cons
- No real-time sync across multiple devices or mobile apps
- Restore process can be slow for very large datasets
- Limited to Windows and macOS; no native Linux or selective real-time sync
Best For
Individuals or small teams needing simple, unlimited automated computer backups without storage limits or complex setup.
Pricing
$9/month or $99/year per computer for unlimited backup storage and bandwidth.
Bvckup 2
otherLightweight, real-time backup software focused on fast mirroring and versioning for local and network folders.
Binary delta-copying engine that efficiently updates only modified file bytes for unmatched speed
Bvckup 2 is a lightweight, efficient backup and synchronization tool for Windows that specializes in real-time folder mirroring using advanced delta-copying to transfer only changed file portions. It supports one-way backups, two-way sync, scheduling, and powerful filtering rules for precise control over what gets backed up. Designed for speed and reliability, it avoids bloatware common in competitors, making it ideal for local and network drive backups.
Pros
- Blazing-fast delta-copying minimizes bandwidth and time
- Extremely lightweight with minimal resource usage
- One-time affordable purchase with no subscriptions
Cons
- Windows-only, no macOS or Linux support
- Lacks native cloud integration or versioning history
- Basic UI may feel sparse for users wanting more visualizations
Best For
Tech-savvy Windows users seeking fast, no-frills local or network folder backups without ongoing costs.
Pricing
$19.90 one-time license per computer; free trial available.
Conclusion
Evaluating the top sync and backup tools reveals GoodSync as the clear favorite, offering automatic, real-time synchronization across local drives, mobile devices, and cloud storage with robust versioning. Syncthing and Resilio Sync follow closely, respectively impressing with open-source peer-to-peer simplicity and secure, BitTorrent-based selective sync, making them strong choices for specific needs. Regardless of priorities, the list provides reliable options to protect and synchronize files effectively.
Begin with GoodSync to experience seamless, automated file protection across all your devices—your data deserves this level of care.
Tools Reviewed
All tools were independently evaluated for this comparison