Consultant 2.5.3 gives you most of the bells and whistles you'd expect in a PIM, including a full-featured contact manager and a calendar that offers day, multiday, week, month, year, Gantt, and list views.
Consultant sports a colorful, albeit cluttered, interface.
Pop-up alarms notify you of upcoming events, but you can't dismiss or snooze the alarms without having Consultant or MiniConsultant open. Data exchange between Consultant and my Palm III was generally reliable, and the online manual did a good job of explaining the rules that govern how individual fields are handled. The most glaring problem is that uncompleted to-do's on the Palm always show up on the current day in your calendar, even if they're due later. By the time you read this, 3Com may have shipped new desktop software based on Claris Organizer. Even so, Consultant 2.5.3 is a fairly good PIM in its own right.