So I got a used iBook G4 from my brother. I was curious to try out a bunch of the open source apps available for Mac. So I thought to my self why not try to replace as much as I could with open source apps.
The setup was as follows. I clean installed OS x 10.5 and then ran software updates to get them all.
The Applications folder was 1.08 GB as shown in the pic below
After removing Safari, iChat, Mail, iCal, and iTunes
I replaced them with Firefox, Adium, ThunderBird, SunBird and VLC
The new size of the Applications folder is now just over 800 MB
Needless to say I was impressed
And here is a side by side of the two docks before and after
I plan on doing a few more test like these including a Frankystien flash stripe thingy but that is for another time