The HTML part of it perhaps but tiddlywiki is also about connecting ideas.
I think this focuses much more on the standalone HTML part of it.
In the same vein, one could also distribute P2P apps via a standalone HTML file by hooking it up via WebTorrent and using their STUN servers. Or at least, I know that it's possible in the past. Just an example, standalone HTML files can be fully fledged apps is my point.