There is little software that can still inspire me so even after years, as on the first day. This includes TiddlyWiki, the "pocket-wiki". The latter is because the Wiki completely fits into an HTML file, and this HTML file brings everything - JavaScript program logic, CSS appearance and the entire Wiki content as stored records. So a TiddlyWiki file is then sometimes happy times some megabytes in size, but just has the unbeatable advantage that it works just as fast file created locally in a variety of browsers.