A browser synchronizer is a tool or an extension which allows users to keep their web browser configured in the same way on different computers or operating systems. For instance, if a user adds a bookmark while being at home, the bookmark will be available the day after at office.[1] Depending on the tool's features, bookmarks, preferences, extensions and GUI can be preserved.
Such functionality is usually available by using third-party plugins. Maxthon 1.3.1 was the first browser on the market to offer cloud-based service for online syncing bookmarks (favorites) in 2005.[2] As of version 9.5, the Opera browser has this functionality built-in, and also offers synchronization of bookmarks and other data between desktop computers, and mobile phones running Opera Mini.[3][4]