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Best File Synchronization and Backup for NAS in 2026

NAS synchronization and backup tools can keep folders and devices in step or copy data to storage. They can support home, office, or mixed-device setups.

  1. 1

    Seafile

    by Seafile
    Free plan Open source AndroidAPIiPhone+5

    Seafile offers broad platform coverage and a choice between self-hosted and cloud editions. Check user minimums, storage limits, and unlisted tier prices when selecting a plan.

    8.7 Free plan · paid from $8/user/mo Visit site
  2. 2

    GoodSync

    by GoodSync
    Free plan AndroidiPhoneLinux+2

    GoodSync covers file backup and restore across desktop, mobile, server, and NAS platforms, with a free plan and 15-day trial.

    7.4 Free plan · paid from $49.95/yr · 15-day trial Visit site
  3. 3

    rclone

    Free plan AndroidAPILinux+4

    Rclone offers broad storage support and flexible file operations, but it is a command-line program rather than a finished graphical tool.

    7.1 Free plan Visit site
  4. 4

    Allway Sync

    by Allway Sync
    Free plan Windows
    6.5 Visit site
  5. 5

    FreeFileSync

    Free plan LinuxMacWindows
    6.5 Free plan · paid from €20 Visit site
  6. 6

    QNAP Qsync

    Free plan AndroidiPhoneLinux+3
    6.4 Free plan Visit site
  7. 7

    Syncthing

    Free plan AndroidLinuxMac+1
    5.9 Free plan Visit site
  8. 8

    Synology Drive

    by Synology
    Free plan WebWindowsMac+2
    5.8 Visit site
  9. 9

    ChronoSync

    Paid Mac

    ChronoSync provides macOS computer and server backup with several license-pack choices and a 15-day trial. Buyers should note the absence of mobile backup, ransomware protection, and a free plan.

    5.6 From $49.99 · 15-day trial Visit site
  10. 10

    Hybrid Backup Sync 3

    by QNAP
    Free plan
    5.6 Visit site
  11. 11

    Cloud Sync

    by Synology
    Paid
    4.2 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare the platforms you use, whether a free plan or trial meets your needs, and the licence if you need to read or change code. Check paid pricing and NAS compatibility before choosing.

Questions

Are free NAS sync and backup tools available?

Yes. Listed options with free plans include Allway Sync, Hybrid Backup Sync, QNAP Qsync, rclone, Syncthing, Synology Drive, and XTrans.

Which option lists a free plan with paid upgrades?

FreeFileSync offers a free tier, with paid plans starting at €20.

Is there a paid tool with a trial?

ChronoSync is listed as paid from $49.99 and includes a 15-day trial.

Which listed tool supports web and mobile platforms?

Synology Drive covers web, Windows, macOS, iOS, and Android platforms.

Can I inspect the source code?

Some listed tools provide open-source code. Review the individual licence before reading or modifying that code.

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