Personally, I use it for writing essays/research pieces and as part of that I take A LOT of notes, gather up sources and references. Scrivener is pretty brillia

Personally, I use it for writing essays/research pieces and as part of that I take A LOT of notes, gather up sources and references. Scrivener is pretty brilliant for all of that IMO. Note taking, probably not as good as Onenote or at least not as flexible. But it lets you keep notes in the same "place" as your work (assuming your work involves writing, of course) which for me personally is hugely beneficial. For a wiki, I actually think it would work quite well. It gives you a lot of tools to sort and store information, and it plays nicely with storage like Dropbox. Only catch is, you need the software in order to be able to read/edit your wiki.