Download [http://sites.google.com/site/macmalayalam/home/RachanaMac.ttf?attredirects=0 Mac version Rachana Font] and install it. The easiest way to install font is to copy it into '''''~/Library/Fonts'''''. More details about installing fonts available [http://support.apple.com/kb/HT2435 here].
<UNFORTUNATELY THERE IS NO MALAYALAM FONT FOR MAC IT SEEMS>
Apple's Safari may not render the pre-Unicode 5.1 coded (non-atomic) chillaksharangal properly. However, Firefox 3.x renders everything correctly.
*Safari: I use Max OS X 10.3 (Panther) and the handling of Indian scripts in Safari (the browser that comes with it) is amazingly flawless.
More details available at [http://sites.google.com/site/macmalayalam/ MacMalayalam].
*Firefox: Unfortunately Indic rendering of Firefox on Mac OS X is not up to the mark yet. It does display Indic script but there are many rendering bugs esp. with matras.
*The Indic fonts are not installed by default. To install Indic fonts you have to start running setup from the installation DVD and choose custom installation mode and select Indic fonts (I only vaguely remember how I did this so use your brain more actively on this one).
#TODO: Write more precise font installation instructions.
In Finder, browse to /Volumes/<Install/Restore Disk>/System/Installation/Packages/ (use the terminal.app to verify the paths on your system since they don't show up in Finder. Install the AdditionalFonts.pkg and AdditionalAsianFonts.pkg and they should work just fine.
