Alco Blom has released URL Manager Pro 3.4.2, the latest update of his professional bookmark manager for Mac OS X. URL Manager Pro allows users to store, manage, and organize bookmarks independently of their browser. Version 3.4.2 adds support for NetNewsWire, the RSS news reader. Support was also added for Opera Mail and Thunderbird. In addition, the support of iDisk and .Mac has been improved and updated. URL Manager Pro 3.4 requires Mac OS X 10.2 or higher and is priced at US$25.