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Airwindows vs x42 plugins: catalog facts
Airwindows	x42 plugins
Free Free and open source, with no DRM.	Free Described as an open-source plugin collection; check the site for packaged builds.
Windows, macOS, Linux	Linux
Hundreds of free effects with frequent new releases AU and VST builds for macOS, Windows and Linux	Standards-based level meters (IEC, EBU) Zero-latency equalizer with spectrum analyzer
Minimal generic interfaces with few visual aids Installation notes vary from plugin to plugin	Requires an LV2 host or a JACK setup Site gives little release or platform detail
Downloadable app	Downloadable app
Open source	Open source
License: MIT	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.