Woodpressor

Woodpressor is a high-end audio compressor. It is both a standalone app supporting IAA (Inter-App Audio) and an AUv3 audio unit plugin.
It has all the classic compressor controls like "Threshold", "Attack", "Release", "Ratio", etc
but also has some extra features not commonly  found on other compressors :
- Auto gain
- Tube distort
- Adaptive Threshold
- Non-linear Release
- Side chain filter (bandpass, highpass, lowpass or notch)
- Makeup Gain Limiter
- Brick-wall Limiter

It also has it's own side chain mechanism as currently no or very little AUv3 hosts implement a side chain.

Woodpressor can save/load user presets, especially useful in standalone mode (or for AUv3 hosts not having their own preset store)
User Presets are written to iCloud Drive which makes them automatically available (and synced, and backed-up) on all devices (and all host apps or DAW's) running Woodpressor.