The Apple Blog published a few business office programs for the Mac in one of
their recent issues. The following software for lanning and scheduling of
projects were on their list of thirty Mac business software
applications.
Project Planning
OmniPlan - One of the newer Omni Group applications, OmniPlan makes heavy
use of Ghant
charts to help schedule and chart the project work on any project you
have.
Daylite Productivity Suite - Incredibly full-featured project management
applications, Daylite is one of the most useful programs on the Mac today. The
full suite includes some features such a Mail integration, shared calendars,
contact management, and more.
Basecamp - 37signals' flagship product, Basecamp has become the standard
for project planning and scheduling in many offices (especially small/home
businesses).
As you can see, the software applications available for the MacIntosh have risen
to a level that allows PM's to perform project planning effectively and
efficiently.