Hi,

It seems the org-ruby project link on the https://orgmode.org/tools.html 
page is outdated and should be updated to the repository of its current 
maintainer.

I suggest to move the link to the Import&Export section since the 
primary purpose of the project is conversion to HTML, Markdown, or 
textile. I have tried to blindly update zh-CN file. Likely it should be 
done more accurately.

Would it be acceptable to add an additional link to the dedicated page 
on Worg?
[[https://orgmode.org/worg/org-tutorials/org-ruby.html][Worg]]