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x42 plugins vs Airwindows: catalog facts
x42 plugins	Airwindows
Free Described as an open-source plugin collection; check the site for packaged builds.	Free Free and open source, with no DRM.
Linux	Windows, macOS, Linux
Standards-based level meters (IEC, EBU) Zero-latency equalizer with spectrum analyzer	Hundreds of free effects with frequent new releases AU and VST builds for macOS, Windows and Linux
Requires an LV2 host or a JACK setup Site gives little release or platform detail	Minimal generic interfaces with few visual aids Installation notes vary from plugin to plugin
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account 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.