Too many.
Not enough.
Picasa and IPhoto are two different programs. Picasa will work on a Dell, but many Mac users have problems with it. IPhoto will work on a Mac, but many Dell users can't use it.
No, Cool Edit Pro is not available for Mac users.
too few
Parallels Desktop for Mac is a software package for Mac users to run Windows applications on their computers. This package is available from Amazon and many others
According to an analyst survey in March 2007, the estimated installed user base of Mac OS X is approximately 22 million users (source linked below). That number presumably does not include pre-Mac OS X (Mac OS 9 or earlier) users.
The best piano tuner software for Mac users is generally considered to be TuneLab Piano Tuner.
Too many. Not enough.
10
There are many, most popular for pc/mac users is Microsoft Excel. For mac, it is Numbers, from Apple inc. Or, for free, you can get the whole Openoffice.org suite.
When online, it doesn't really matter whether you are a mac users or windows user.
NOW, go and check out the website! IMVU is now available forr MAC :)
about 7 billion.