MAAT – 2BusControl VST VST3 AAX Win OSX [FREE]

2BusControl is a free monitoring utility plugin for stereo bus masters, available in VST/VST3 and AAX for Windows and macOS, plus AU on Mac. It gives you five specialized monitoring modes: traditional left/right solo (as phantom center), mono/difference, and mid/side, plus a channel swap to flip the stereo perspective. The upper half of its compact interface shows stereo balance and inter-channel correlation metering, with ballistics tuned to match what you hear. Solo is post-metering and each mode is a single button, so checking placement and amplitude across your mix is quick. It runs light on CPU and takes up little screen space, making it easy to keep open on your master bus. This is aimed at hobby producers and engineers who want practical stereo monitoring and metering without extra cost, and it works in any DAW that supports the listed formats, including FL Studio, Ableton Live, and Logic Pro.