yMail can be used as a spam cleaner for your existing email setup, and also as a standalone email client. yMail's spam filters use Bayesian techniques. You can show yMail which messages are spam and which are not (before you even download them to your computer!) and each time will adjust its filters to suit. After a few days, it will be able to sort mail quickly and efficiently without any input.

yWriter is a free novel writing program for authors. It allows you to break your novel into chapters and scenes within chapters. You can reorder scenes using drag and drop, and you can print out a number of reports (summary, synopsis, scene list, work schedule). Gives you a running word count per scene and chapter, and the built-in editor auto-saves your work.

yRead will load a plain text (TXT) or HTML file and display it in a single-column, resizable window. Then it will read the file to you out loud, using human speech.