Audio Plugin Union is a suite and delivery platform for mixing and mastering plug-ins, originally developed by MAGIX Software GmbH and later brought under the Boris FX pro audio division. The platform consolidates installation, activation, and updates for a growing catalog of VST/AU/AAX effects, aimed at producers and engineers working in major DAWs.

Its plug-ins are grouped into three collections: the wizardFX Suite, a set of one-knob effects built around a simplified "one-slider" workflow with large preset libraries; the coreFX Suite, a bundle of essential mixing and mastering processors covering compression, EQ, limiting, gating, modulation, delay, and reverb; and the colorFX Suite, which focuses on saturation and tonal character. The emphasis across the product line is on streamlined interfaces and preset-driven results rather than deep parameter editing.

Audio Plugin Union has 1 product cataloged on Equipboard, including Envelope Shaper Plugins.