Services like Versiontracker and MacUpdate offer applications that tap into their databases to compare your installed software versions with the latest known. It’s a great way to stay up to date and avoid compatibility problems spawned from using older versions of software.
Tri-Edre software is offering a competing product, CheckUpdates. It’s free if you use it only to keep track of the company’s offerings. Paying $10 gives you the ability to compare third-party applications.
How do all of you maintain your software versions? Am I missing out by relying upon RSS and email reminders?