Pc-Task was sure a piece of excellent software. I did use it for running som dos apps om my A4000 years ago and I was impressed with the emulation speed. Just for fun I even tried to install w95 on it. After many tries I finally got it running - but to slow to be useful for anything. And unstable as well, it usually would crash soon after the desktop apeared.
Its a nice gesture from Chris to release it for free. Also it would have been great to see a Aos4 PPC native version, so unless he have any plans for it, I hope he would consider releasing the source code as well some day.
Another option is Bochs, which source code is available as well. But it seems like its not updated since 2006. Also I have a feeling that Bochs will be much slower than a native PC-Task version would be.
Then there is Dosbox. Not made for running w95 at all, but it apears like people have successfully managed to run w95 on it. Not sure if the Amiga versions are up to it though.