Most Google products, in the past, have often been limited to Windows users. However Google is quickly changing and is constantly releasing more Macintosh supported programs. Even heavy duty applications such as Google Earth are now available for Mac OS (still in beta). Anyways Google has created a simple download page for Mac users to download their apps.
Google Mac Apps:
Most of these are still in beta, but then again almost every Windows application Google has pushed out is still in beta as well.