The open-source audio production toolset is becoming more and more powerful and feature-complete with every year passing.
Something still missing from it are artist-friendly tools for reverb removal (both realtime and offline). Here's a list of existing open-source projects that could be used as basis for such tools:
https://github.com/HoerTech-gGmbH/openMHA https://github.com/fgnt/nara_wpe https://github.com/helianvine/fdndlp https://github.com/sas91/jhu-neural-wpe https://github.com/sjlee7/speech-dereverberation