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Dragonfly Reverb vs FabFilter Pro-R: catalog facts
Dragonfly Reverb	FabFilter Pro-R
Free Free and open source, with optional donations.	Paid Paid plug-in with a 30-day trial.
Windows, macOS, Linux	Windows, macOS
Several reverb types in one bundle Runs on Linux as well as macOS and Windows	Musical controls instead of technical reverb parameters Stepless Space control across many room models
Plugins only; needs a DAW or plugin host Maintained by a small team	Paid after the trial Needs a host DAW; it is not a standalone app
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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