Note that you may need to work around Gatekeeper to open the app, and adjust your settings to grant the app permission to access your Safari bookmarks. To try it out, head over the SafariSort website and download the latest version of the app (version 2.0.2 as of the date of this article’s publication, which works on macOS Mojave 10.14.0). SafariSort is a free utility that unsurprisingly does one thing: sort Safari bookmarks. Thankfully, there’s a third party solution. Sort Bookmarks in Safari With a Third Party App