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WinDataReflector

File Synchronization and Backup with Visual Comparison .

Version 4.0.1 · updated 2026-10-02 · for Windows · Free · licence: Freeware

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About WinDataReflector

WinDataReflector supports synchronizing files and data to Google Drive, Dropbox, OneDrive, FTP, and SFTP. It can sync files between a local folder or network share and a cloud folder or two cloud folders. Changes made to either the left or right folder are mirrored to the other folder, making them identical, and you can also configure WinDataReflector to propagate only specific changes.

Recognize external hard disks and flash drives by volume label, regardless of drive letter, and optionally start backup and synchronization tasks automatically whenever a flash drive or external disk is connected to the computer. WinDataReflector's default configuration is set to never delete files to avoid accidental file deletion. However, you can change it to either move deleted files to the Recycle Bin or permanently delete files.

In addition to timestamp and size comparisons, WinDataReflector also supports using CRC (Cyclic Redundancy Check) checksums to compare files and verify their integrity after copying. Add commands to run before and after backup and synchronization tasks. Commands can include programs launched with specific command-line arguments or executable batch files.

Features of WinDataReflector

Supports synchronizing to major cloud services, SFTP, and FTP

Two-way synchronization with fully customizable rules

Automatic synchronization and backup with built-in scheduler

Schedule any task to run automatically at certain times of day or days of the week and at specific intervals.

Automatic synchronization of USB flash drives and external hard disks

Real-time synchronization and backup

Run multiple tasks simultaneously in tabs

View and run several tasks at the same time in separate tabs.

File and folder filtering using Regular Expressions or regular search

Exclude any directory, file name, file extension, or files that match regular expressions on the exclusion list.

Support for NTFS file permissions (ACLs/DACLs)

Copy NTFS file security information and access rights to destination files and folders.

Delete options: never delete, move files to recycle bin, or permanently delete files

Keeping copies of old files before replacing them

To protect against data loss, WinDataReflector can copy files before replacing them with newer versions.

CRC comparison and verification

System requirements

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