18.7
Free planOpen sourceAndroidiOSWeb
Best File Synchronization and Backup for NAS in 2026
NAS file-sync and backup software can keep folders and file copies consistent across a NAS, connected devices and services. Use this list to compare software by platform, pricing model, licensing and trial terms. Android support differs by tool, so check the platform details before choosing a phone-friendly option. Coverage across this list spans Android, web, Windows, macOS, iOS and Linux; verify that each tool…
27.6
Rclone is a free command-line program for managing files across cloud storage services.
Free planAndroidWebAPI
36.7
GoodSync is file backup and synchronization software for computers, mobile devices, servers, and NAS.
AndroidiOSLinux
- 4
QNAP Qsync
Free planAndroidiOSWebLinux6.2Free plan - 5
XTrans
XTrans is a free, multilingual tool for manually transcribing and annotating audio on Linux and Windows.
Free planLinuxWindows6.2Free plan - 6
ChronoSync
macOS5.9From $49.99 a month - 7
FreeFileSync
Free planLinuxmacOSWindows5.6Free plan - 85.3Free plan
- 95.3
- 10
Syncthing
AndroidLinuxmacOSWindows5.1 - 11
Cloud Sync
Synology
4.3 - 124.3
Choosing well
Check Android access
If you need NAS files on a phone or tablet, verify that the tool lists Android support and check what its mobile app covers. Synology Drive lists Android alongside web, Windows, macOS and iOS.
Match your devices
Compare the platforms you use across computers, phones and tablets. Options in this category cover combinations of Windows, macOS, Linux, Android, web and iOS.
Check the product page for the exact platform list, especially when a NAS and a personal computer use different systems.
Compare plans and trials
This selection includes free offerings alongside freemium and paid plans. FreeFileSync has a free tier with paid options from €20; ChronoSync starts at $49.99 and includes a 15-day trial.
Review the tool's pricing note to ensure any trial or paid tier fits your backup routine.
Review licence and fit
Some entries provide open-source code. If access to source code matters, check the licence and the project’s own terms before setup.
Look at documentation and the stated platform coverage for tools such as rclone, Syncthing, QNAP Qsync, Hybrid Backup Sync, Seafile or a Synology option.
Questions people ask
Which tools list Android support?
Synology Drive lists Android support. For other tools, check the product’s platform details before choosing it for a phone or tablet.
Are free plans available?
Yes. Free plans are offered by tools in this category, including Allway Sync, FreeFileSync, Hybrid Backup Sync, QNAP Qsync, rclone, Syncthing and Synology Drive.
Is there software with a free trial?
ChronoSync includes a 15-day trial. Trial terms can differ from a free plan, so read the pricing note for the tool you choose.
Which platforms are represented?
Across the list, platforms include macOS, Linux, Windows, Android, web and iOS. Check the individual product page for its exact support.
Can I choose open-source software?
Some tools in this category provide open-source code. Check the licence and project terms to confirm they suit your needs.