Licence
Triki is public domain.
Triki (Wiki) is a wiki where the pages have got a hierarchical structure (ideal for documentations) with an automatically generated table of contents. It also feature html export (version 1.02 to 2.01), by which all the pages in the database can be exported as pure html files.
Note that the database encoding is different between 1.xx and 2.xx (therefore you cannot upgrade an existing 1.xx instance to a 2.xx instance -- unless using a special script which I am quite happy to send to you).
Version 3.00 doesn't use a database, but flat files...