[nnnnnick]

Didn't use any particular software or tools as such, but used Google prettify (https://code.google.com/p/google-code-prettify/) for coloured syntax highlighting.

Wrote the content in plain HTML, and used jQuery to build the nav on left hand side from the headings on the page.

[ummjackson]

Great job, some of the best docs I've seen in a while.

[NKCSS]

Very nicely done :)