I use open source project Scuttle to manage my bookmarks on my server with full control over all my information. Scuttle is GPL licensed and uses PHP and MySQL to create a multiuser environment for storing bookmarks for public or private consumption.
Anyone is welcome to join my social bookmarking tool on NiallKennedy.com. The API is a del.icio.us clone and open for import and export of your bookmarks if you try it out but don’t like it.
Tags: socialtagging, tagging