Open Source
HARK
Though HARK supports numerous signal processing methods, it requires a
significant amount of computing power, which makes it less suitable for use on
low-cost embedding hardware
https://hark.jp/download/source-code/
ManyEars
https://github.com/introlab/manyears
ODAS
https://arxiv.org/pdf/2103.03954.pdf
https://github.com/introlab/odas