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Grsync vs FastCopy: catalog facts
Grsync	FastCopy
Free Free and open source under the GPL.	Freemium Free for personal use. A Pro licence is required for continued workplace use.
Windows, macOS, Linux	Windows
Saved sessions turn a long rsync command into a one-click job Simulation mode shows exactly what would change before running	Noticeably faster than Explorer on large trees, with verification Mirror mode plus include and exclude filters for repeatable jobs
Exposes only a subset of rsync's options Interface is GTK and looks dated	Free for personal use; continued workplace use requires a Pro licence Terse interface with many options and little guidance
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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