These guys have an entire library of old Apple ][ programs online that run within the browser. They use an ActiveX control that’s an Apple ][gs virtual machine emulator running within the IE… Sweet!
[with Virtual Apple]…”you can now relive, play, and enjoy old Apple 2 games and other disks through the internet and web browser. This web site uses an ActiveX application and Apple IIgs emulator to automatically download and play most Apple 2 disk images online. To play a game, just select the disk from the menu and click on Yes to automatically download the ActiveX emulator and disk images. (Note: Requires Internet Explorer and Windows) Don’t worry, there isn’t any spyware to worry about, and it’s completely free!” (via Boing Boing)