Greasy Fork https://greasyfork.org/ Created by the maintainer of http://userstyles.org/. HTTPS is available and enforced by default. Open source, hosted on GitHub. OpenUserJS.org https://openuserjs.org/ "The home of FOSS user scripts." Only HTTPS is available. Open source, hosted on GitHub. Gist https://gist.github.com/ Gist is GitHub's "paste" service, where any set of simple files can be pasted