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FxSound vs JamesDSP: catalog facts
FxSound	JamesDSP
Free Free and open source. Hosting, hardware and any external services are separate.	Free Free and open source under the GPL-3.0.
Windows	Linux
Includes sound presets and equalizer controls Offers system audio enhancement settings	System-wide effects for PipeWire and PulseAudio Scripting and API support
Audio effects can change the original sound and depend on the playback setup.	Linux only PulseAudio setup needs separate installation steps
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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