There is lots of Apple II software on the internet! Here are some of the most relevant websites:

Mirror of many Apple II software repositories

Virtual Apple ][
An extensive Apple II game library

To install a disk image in the AppleIIGo Dashboard widget flip to the back side of the widget, click on the Disks button, and copy your disk image to the folder that just opened in Finder.

Author's favorites

Lemonade Stand
Apple's first game

The classic break out game

Another console classic

Stack it up

The Hunt for Red October (Disk 1) (Disk 2)
Submarine sim

Oregon Trail (Disk 1) (Disk 2)
Make it to Oregon in the 19th century

 Website created by Bill Martens from The original website at www-personal.umich.edu/~mressl/appleiigo/ — 2006-2017