Vladyslav Voinov has recently released an open-source waveshaping plugin for Windows, macOS and Linux: PeakEater.
PeakEater lets you choose between different waveshaping functions to clip everything above ceiling level. Therefore, you can boost overall volume of your track safely without worrying that some nasty peak would go above maximum allowed volume level of your DAW.
It supports various features such as multiple clipping types, oversampling and visualizations of clipping process that aims to make clipping easy and fun.
PeakEater is free to download in VST3, AU, LV2 and CLAP plugin formats at Github.