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

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