Is there a list of HN-related projects and tools somewhere? There is a great number of weekend projects that enhance or complement the HN reading experince.. E.g. I enjoy the "collapse this subtree" bookmarklet. There are also some projects that "summarize" HN news over some period for those of us who dont have time to be here every day. There are also some projects that aim for "dont miss anything from front page", some "parsers" for code processing etc.

Would be great to have a list of such projects in one place.