Firefox Sync - Bring your Firefox bookmarks, tabs, or passwords wherever you go with Firefox Sync. Share between computers and mobile devices. Get Firefox now!

BookMacster - Sync bookmarks between different browsers and cloud platforms such as dropbox and icloud

Linkman - Linkman Pro allows for managing large amount of URLs in its own database.

Bookmarks Backuper - Backups Chrome bookmarks to your Google Drive.

Raindrop.io - All your articles, photos, video & content from web & apps in one place.

Bookmarks Clean Up - Find and remove duplicated bookmarks manually and in batches, get rid of broken bookmark links and empty folders.