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Lsyncd vs Unison: catalog facts
Lsyncd	Unison
Free Free and open source.	Free The open-source application is available without a license fee.
Linux, Command line	Windows, macOS, Linux
Near real-time mirroring triggered by filesystem events Uses standard rsync and SSH for transfers	Handles updates made independently on both replicas
One-way mirroring rather than two-way sync Command-line and config-file only, no GUI	Conflicting edits may require a decision before synchronization.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
No account needed	Not stated if an account is 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 September 22, 2026

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