Geoff Hutchinson blogged about his OS/X ChemSpotLight, an indexing tool for chemistry documents. It’s like, but more advanced than, the kfile_chemical and Kat I have been working on (with others) for the KDE desktop (see earlier blog items). ChemSpotLight currently does more than the KDE tools: it adds Spotlight comments. I assume these are like the Linux extended attributes, used for example by Beagle.