This is a simple semi-private wiki installation I, Luca Saiu, may occasionally use with my friends or colleagues.
The wiki engine is PukiWiki; I chose it because it was free software, relatively simple and self-contained, based as it is on text files.
Pukiwiki is a Japanese project with a lot of information available in Japanese; I can still figure out how to use it without speaking the language from the English documentation laying around, even if it is not always easy to find or up to date. I have put together a page of Examples showing most of the wiki syntax, which will be sufficient for my needs.