SquirrelBak is a lightweight, one-way backup tool for secure, real-time PC-to-PC backups on Windows. It runs quietly in the background and automatically reconnects and resumes after interruptions—no cloud, no account, no subscription required. Key features: • One-way sync (Sender → Receiver) • Real-time folder monitoring with low CPU/disk usage • One-click sync between PCs • Auto-reconnect and resume transfers • Silent background operation • Backup history and Check & Complete