[asaka]

Here is his post about why he closed source the PySornar and RubySonar: http://www.yinwang.org/blog-cn/2017/04/18/close-source

[hvis]

Thank you.

Too bad it's in Chinese, but Google Translate got me the gist. An unfortunate story.

Not sure why he didn't settle on GPL or AGPL, though.