Rage Software today announced the availability of Macintosh Explorer 4.3.1, a maintenance update to the tabbed file browser and file management tool for the Mac. This free update adds speed improvements when resizing the Explorer windows as well as in other areas and brings compatibility with Mac OS X Tiger. Macintosh Explorer requires Mac OS 9.x and Mac OS X 10.2 or later, and is priced at US$15.95. A free trial is available.