PeakEater
PeakEater is a free open-source VST3/AU/LV2/CLAP wave shaping plugin for macOS, Windows and Linux.
PeakEater lets you choose between different wave-shaping functions to clip everything above ceiling level. Therefore, you can boost the overall volume of your track safely without worrying that some nasty peak would go above the maximum allowed volume level of your DAW. It supports various features such as multiple clipping types, oversampling and visualizations of a clipping process that aims to make clipping easy and fun.