Backup by ZawebaFolder backups you can actually trust.
Know your important folders are safe, and when they were last backed up. Mirror, Echo or two-way sync to a USB stick, second drive or network share, with a preview first and old copies kept safe.
This version isn't signed for Windows yet: if SmartScreen warns you, choose More info › Run anyway. Why?

Backup by Zaweba copies the folders that matter to a USB stick, a second drive or a network share. Pick a mode for each pair of folders: Mirror makes the backup match, Echo only ever adds and updates, and Synchronise carries changes both ways.
Every run starts with a preview, and nothing changes until you click Run. Files that would be deleted or overwritten are moved to a _zaweba_versions folder first and kept for 30 days by default. The dashboard gives each backup a green, amber or red tick, so you know where you stand at a glance.
Who it's for
- Anyone with precious photos and documents on just one drive
- Families backing up to a USB stick every week
- Small offices copying to a network share
- Anyone who wants folder backup that is simple to set up
Good to know
- Schedules run while Backup is open or in the notification area; Start with Windows keeps them running from login
- Files held open by another program (such as an email program data file in use) are skipped and retried next run
- OneDrive online-only files are downloaded when they are backed up
Private by design
- Works offline, with no account and no adverts.
- Checks zaweba.com once a day for a newer version, sending only the app's name.
- Problem reports and feedback are sent only if you click Send.
Everything you need, nothing you don't.
Mirror, Echo or Synchronise
One-way mirror, add-only echo or true two-way sync that can tell a new file from one deleted on the other side.
Preview before anything changes
See every copy, update and removal with the reason for it. Pairs you trust can skip the preview.
A safety net for old copies
Anything a run would delete or overwrite is kept in _zaweba_versions for as many days as you choose.
Schedules and USB detection
Run daily, weekly, at login or when the drive is plugged in, found by its volume ID, not its letter.
Checked copies
Every copy is checked before it is put in place, with optional SHA-256 checks and a Verify backup tool.
A dashboard that tells the truth
Green, amber or red for each pair, with the last run, next run, size and which drive it is on.
Pull the stick out. Nothing breaks.
Each file is written under a temporary name, flushed to the drive and checked before it takes its real name. Copies happen first and removals last, so an interrupted run has only ever gained files. Unplug the drive mid-run and the pair turns red; the next run simply finishes the job.
- No half-written files under real names
- Interrupted runs finish next time
- A missing source is never treated as empty

A guard against big mistakes
If a Mirror or Synchronise run would move more than half of the files (and at least 10) to the versions folder, Backup always stops at the preview, even for trusted pairs and scheduled runs. A backup folder inside its own source is refused, and every run and verify writes a full log.
- Mass-removal guard
- Overlap check
- A log of every run and verify

The details
| Works on | Windows 10 and 11 (64-bit) |
|---|---|
| Modes | Mirror, Echo (add only) and Synchronise (two-way) |
| Backs up to | USB drives, second drives and network shares |
| Schedules | Daily, weekly, at login or when the drive is connected |
| Checks | Size and date, or SHA-256 |
| Command line | Runs a pair for scripts and Schedule by Zaweba (--run) |
| Version | Version 1.0.9 |
| Download | ZawebaBackup-1.0.9.zip (66 MB): unzip and run, no installer |
| Licence | Free for everyone, with every feature included. No warranty |
Backup FAQ
What if a run would delete a file I still need?
It isn't lost. A run that would delete or overwrite a file moves it to _zaweba_versions first, kept for 30 days by default, or for ever if you set the pair to 0.
What if my USB stick gets a different drive letter?
It doesn't matter. Backup finds the drive by its volume ID, wherever Windows mounts it, and ignores another stick that takes the old letter.
Which mode should I choose?
Echo is the safest and the default: it adds and updates but never removes. Mirror makes the backup an exact copy, and Synchronise keeps two folders in step both ways.
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Download Backup by Zaweba: no account, no adverts, every feature included.