Smarky

Note: Smarky is no longer being offered because, beginning with one of the Safari 11 releases, in Safari’s Bookmarks > Edit Bookmarks, there is a Sort By > contextual menu which will sort items. This is certainly not as powerful and flexible as Smarky, but given that installing and maintaining Smarky is a bit of work, we feel that most users are better off using this this new function which is built into Safari. Someday soon (probably August 2018), when Smarky users launch the last version of Smarky, they will be offered a free upgrade to Synkmark, which has all of the power of Smarky and more.

Smarky is the bookmarks manager for Safari bookmarks which is compatible with Apple's iCloud. After installing Smarky and enabling iCloud syncing, you can have automatically alphabetized and organized Safari bookmarks on all of your Apple devices.