Auto-Sort Bookmarks is described as 'This extension considers separators, so that it sorts bookmarks between separators' and is an app. There are three alternatives to Auto-Sort Bookmarks for a variety of platforms, including Google Chrome, Windows, Firefox, Linux and Mac. The best alternative is SuperSorter, which is free. Other great apps like Auto-Sort Bookmarks are Sprucemarks and Recursive Bookmark Sorter.
Auto-Sort Bookmarks alternatives are mainly Bookmark Managers but may also be Duplicate File Finders. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Auto-Sort Bookmarks.