Most of these are resources that I've used on this site in the past but I decided not to cherry pick the ones that I currently use because (a) I'm lazy, (b) most of the resources I use on a page are linked at the bottom of the page and (c) these are all great resources. The majority of the first two categories are used for icons that I plan on putting up on this site eventually so I'm just placing them up beforehand so that I don't forget.
Open source on Github but I used the previous version when it was on the internet.