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Lsyncd vs Bvckup 2: catalog facts
Lsyncd	Bvckup 2
Free Free and open source.	Paid Paid software with a two-week free trial.
Linux, Command line	Windows
Near real-time mirroring triggered by filesystem events Uses standard rsync and SSH for transfers	Delta copying and multi-threaded processing for speed Backups can trigger when a specific USB drive is connected
One-way mirroring rather than two-way sync Command-line and config-file only, no GUI	Windows only One-way replication rather than versioned backup archives
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.