Looks pretty cool, I love lightweight stuff! I am curious, what does the word "quine" mean in this context? I always thought quines were just programs which output their own source code. I suppose that's technically true in this case, but only if you view the source, and under that logic couldn't you say all static websites with 100% client-side javascript are quines?

The wiki/app is the html file itself. If you add / remove content, you get another html file that contains the wiki app and the added / modified content.

No need for complicated applications, compatible wherever a browser runs (All OS), always compatible cos html (the raw html is human readable). No proprietary format lock in.

For the strict meaning: https://en.wikipedia.org/wiki/Quine_(computing)

For mindblowing stuff:

Quine Relay - A Ruby Program that generates Rust program that generates Scala program that generates ...(through 128 languages in total)... REXX program that generates the original Ruby code again. https://github.com/mame/quine-relay