Safety-first file synchronization

Every feature built for trust.

Full visibility into every sync. Undo any mistake. True multi-cloud freedom without the complexity.

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Industry-unique

Three layers of protection between you and data loss.

Most sync apps have one safety mechanism, if any. SynciZen has three — and they work together so that even if one is bypassed, the others still protect your files.

No other desktop sync app records every operation before execution. SynciZen does — so you can always see what happened, and undo it if needed.

1

Preview Before You Sync

Every file to be created, updated, or deleted is listed before anything runs. You confirm — then sync proceeds.

2

Deletion Guard

Sync is automatically blocked if too many files would be removed at once. Catches bulk-delete accidents before they cascade.

3

Local Trash + Undo

Deleted files are kept locally in a recoverable folder. Reverse any entire sync batch with one click — even days later.

15+ Providers

One app. Every cloud you use. No per-account fees.

Unlimited accounts — buy once, own forever
Google Drive
OneDrive
Dropbox
Box
Amazon S3
Cloudflare R2
Wasabi
Azure Blob
Backblaze B2
SFTP
Proton Drive
Mega
pCloud
Yandex Disk

Mix Google Drive, OneDrive, Dropbox, S3, SFTP, WebDAV, and more in a single sync workflow. Add as many accounts as your workflow needs — the license never charges per account.

No surprises

You always know exactly what's about to happen.

Before any sync runs, you see a complete plan: every file to be created, updated, or deleted — with counts, sizes, and any conflicts flagged. Nothing moves until you confirm.

Step 1
Preview Changes

Files to create, update, delete — all listed with sizes

Step 2
Confirm

Review and approve — or cancel with zero changes made

Step 3
Sync Runs

Live progress: file names, transfer speed, batch count

Step 4
Undo Available

Reverse the entire batch anytime — files restored from trash

Everything you need, nothing you don't.

Sync Modes

Bidirectional Sync

True two-way sync with automatic conflict detection

One-Way Sync

Three deletion policies: archive, mirror, or add-only

Multiple Sync Pairs

Pair any local folder with any cloud folder, unlimited

Conflict Resolution

Auto-Detection

Hash-based detection flags diverged files before syncing

Side-by-Side Comparison

See size, modification time, and hash for both versions

Four Resolution Options

Keep local, keep remote, keep both, or use newest

Safety & Recovery

Deletion Guard

Blocks sync if too many files would be removed at once

Local Trash

Deleted files kept in a recoverable folder for 30 days

Undo Last Sync

Reverse an entire sync batch with one click

Smart Filtering

100+ Built-In Ignores

.git, node_modules, .DS_Store, and more excluded automatically

Custom Glob Patterns

Add your own ignore rules in Settings

Ignored File Count

See exactly how many files were skipped in each preview

Change Detection

Fast Mode (Timestamp)

Uses file modification times to detect changes — extremely fast for everyday use

Safe Mode (Hash)

Computes BLAKE3 or xxHash of file contents — accurate even when timestamps are unreliable

Per-Pair Override

Set Fast or Safe independently for each sync pair — optimize per use case

Scheduling & Automation

Periodic Auto-Sync

Configurable interval per sync pair

Startup Sync

Sync automatically when the app launches

File Watcher

Real-time sync triggered when files change

Per-Pair Control

Pause, resume, or schedule each pair independently

Progress & Monitoring

Live Dashboard

Per-file names, bytes transferred, speed, and batch progress

Aggregate Progress

Track multiple simultaneous sync pairs at once

Global Status

Idle, syncing, paused, or error — visible in app and tray

Notifications

Five Event Types

Sync started, completed, error, conflict detected, recovery

Flexible Delivery

Off, in-app, system notification, or both per event

Cross-Platform

Native system notifications on Windows, macOS, and Linux

Performance Controls

Bandwidth Limits

Set upload and download speed caps in KB/s

Metered Connection

Automatically pause sync on metered networks

Parallel Transfers

Concurrent workers for fast, efficient syncing

CLI & Headless

Full CLI Parity

Every GUI feature available from the terminal

Daemon Mode

Run as a background service on servers and NAS

CI/Cron Ready

Use --auto-confirm for non-interactive pipelines

Structured Exit Codes

Script-friendly output for automation

Desktop Experience

System Tray

Sync continues with the window closed, status icon updates live

Auto-Start

Launch at login, minimized to tray

Zero-Window Mode

No window at startup, UI created only when you click the tray

Activity & Logging

Event Feed

Categorized log of all account, sync, safety, and recovery events

Filtering & Export

Filter by severity, account, or category; export as text

Debug Logging

Rotating file-based logs, toggled at runtime without restart

Remote Browser

Tree Navigation

Browse remote cloud folders from within the app

File Metadata

See name, size, and modification time for remote files

Sync State

Visual indicators show synced, partial, or cloud-only status

Up to 16× Less CPU
Windows active sync
Up to 262 MB Less RAM
Linux · lightest on every platform
Up to 8.7× Lower Peaks
Zero CPU spikes above 20%
View full benchmarks & comparisons

Try it free. Buy once. Sync forever.

Full 15-day trial with every feature included. No credit card. One lifetime license — no subscriptions, no per-account fees.

  • 15+ cloud providers
  • Unlimited accounts
  • Full safety layer
  • CLI & daemon
  • Windows, macOS, Linux
15 days free — all features included
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