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Lsyncd vs csync2: catalog facts
Lsyncd	csync2
Free Free and open source.	Free Free and open source.
Linux, Command line	Linux, Command line
Near real-time mirroring triggered by filesystem events Uses standard rsync and SSH for transfers	Synchronizes files across many hosts at once Tracks file state in a database to detect conflicts
One-way mirroring rather than two-way sync Command-line and config-file only, no GUI	Aimed at server clusters, not desktop users Command-line and config file only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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