MacUpdate Desktop can track software updates for 30,000 Mac applications, and it also provides update support for applications on the iPhone, although iTunes handles that pretty well. Updates can be triggered manually and individually, or set to install automatically when MacUpdate Desktop is open. It also provides support for updating screen savers and allows users to sort applications into "watch lists," so they can keep track of programs that are more important to keep current than others.
The update includes improved handling of the software it tracks, such as version and application matching, as well as French, German, and Italian localization. Some of the bugs it fixes are community preferences, registration problems, and issues with extracting tar bzip2 and dmg.zip downloads.
There are several update managers out there for Mac OS X (including AppFresh, LogicielMac, VersionTracker Pro, etc.) with fans and detractors of their own. If you've had great or not-so-great experiences with any of the updater tools, let us know in the comments.
Want to win one of two subscriptions to MacUpdate Desktop, courtesy of MU and TUAW? Read on for details!