TiddlyWiki is very good and useful, but since at this time I used multiple computers during the week, it wouldn't work for me to use it as a single file on my computer, so I had to hack its internal tiddler saving mechanism to instead save the raw data of each tiddler to remoteStorage and load them from that place also (ok, there was in theory a plugin system, but I had to read and understand the entire unformatted core source-code anyway).
There was also a server that fetched tiddlywikis from anyone's remoteStorage buckets (after authorization) and served these to the world, a quick and nice way to publish a TiddlyWiki -- which is a problem all people in TiddlyWiki struggle against.