Mac OS X/Leopard (10.5). The versions of Safari, Firefox, Camino, Mozilla, and OmniWeb that run under Mac OS X 10.5 have all been tested successfully. However, for the best results, you should set the font to Times or Lucida Grande, since these fonts seems to have the widest support for Unicode characters in Mac OS X. Apr 22, 2020 Downloading OpenOffice for Mac was successful. Installing OpenOffice for Mac was successful. However, My iMac (OS X Maverick) blocked App, unable to open. I tried same procedure on my old G4 Mac, and result was the same. Finally, my wife tried on her Mac.
Choose About this Mac from the Apple menu and check the processor.
If it's a Core Duo Mac, click here, install the DVD, and run Software Update.
If it's a Core 2 Duo or better Mac, upgrade it as if it was a Core Duo Mac, and once done, if desired, open the Mac App Store and try downloading Yosemite. If you get told it's incompatible, go to the online Apple Store and order a download code for Lion 10.7.
Mac OS X 10.7 and newer don't support PowerPC software such as Microsoft Office 2004. If you upgrade the OS, back up the computer first.