Data is synced from the Chrome Web Store. View the official store page for the most current information.
All the features of SingleFileZ have been merged into SingleFile: https://chromewebstore.google.com/detail/singlefile/mpiodijhokgodhhofbcjdecpffjipkle?hl=en
You just have to select File format > format > self-extracting ZIP (universal) in the options page of SingleFile to get the same result.