I installed it on my OS3.9 (WinUAE) AntiAliasing works fine and looks really good. :-)
Here is a screenshot showing AWeb with antialiased Fonts:
http://amidevcpp.kilu.de/AfA/AWeb3_5APL.pngThere is a bug in the datatype but this should be removed in the next release.
I don't know if it is possible to compile AfA_OS for PowerPC Amigas.
You should ask this question to Bernd Roesch (the Author of AfA_OS).
You can post your question in the AFA_OS Forum:
http://amidevcpp.kilu.de/forum/index.php?c=3