#WritersCoffeeClub 1/4: Share a tool of your trade.

Wikipedia. (Everyone else already said Scrivener.) A lot of my work requires a great deal of research. A lot more than people even begin to realize.
Wikipedia is basically my one-stop shop for finding it. Especially with the search engines turned to pure fucking worthless slop. The paper I'm looking for won't show up there, but somebody cited it as a source, so it's right there on Wikipedia.