Syncronaut is built around one simple idea:
keep two folders in sync as quickly and reliably as possible.
You define a Source and a Backup, then choose between two modes:
- Adds and updates files from Source → Backup.
- Never deletes files already in Backup.
- Ideal when the Backup may contain extra edits you don’t want removed.
Example use cases:
- Adding new photos to a growing library
- Syncing music to a secondary drive without wiping existing files
- Makes Backup an exact replica of Source.
- Adds and updates files, but also removes extras in Backup.
- Perfect for clean backups when you fully control both ends.
Example use cases:
- External backup drives
- Cloud-mounted folders that should always match your main copy
- Launch Syncronaut.
- Select your Source folder.
- Select your Backup folder.
- Pick a Mode (Legacy Sync or Fast Sync and Mirror).
- Preview the progress in Live log.
- Click Start Sync and monitor progress in the log panel.
- Click Abort to stop the current operation.
- Review logs carefully when running in Mirror mode (files may be deleted).
- Combine with Verify Downloads to ensure installer authenticity.