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Open-source alternatives to FabFilter Pro-Q

FabFilter Pro-Q is made by FabFilter. These project covers similar ground for free. Each one does part of the job, so check the notes on its page.

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ZL Equalizer

AGPL-3.0Active

A modern parametric equalizer with dynamic bands, an analyzer and linear-phase options, aimed at the same workflow as the big paid EQs.

Formats

VST3
LV2

Works on

Windows
macOS
Linux

Stars1k

UpdatedNov 3, 2026

Instead of

FabFilter Pro-Q

Browse the category

EQ & dynamics7

Also replacing

FabFilter Pro-C