Here is our small collection of software tools you can use to make your own local copy of your favorite artists' works.
The bold links lead to stuff developed by people who contibute /y/updates, others are here just because they've proven to be useful.

fantiaimgs — fantia.jp grabber for Windows and Mono

hiccears downloader — hiccears.com grabber for nodejs (with prebuilt executables for Windows)

furdown — furaffinity.net download tool for Windows

gallery-dl — cross-platform image gallery downloader supporting over a hundred of sources

pixivutil2 — pixiv.net download tool for Windows