For those who are interested I have uploaded some more demos:

IBM PC with Wolfenstein 3d, Civilization, Monkey Island: http://jamesfriend.com.au/pce-js/ibmpc-games/

IBM PC with Windows 3.0: http://jamesfriend.com.au/pce-js/ibmpc-win/

Mac Plus with applications and games: http://jamesfriend.com.au/pce-js/pce-js-apps/

That's very nice too, though aren't you going to be running into some legal issues by distributing their ROMs?

Potentially, but I feel that the historical significance of these systems and the value of making them available to a newer generation of creators outweighs the technical infringement of copyright. It's basically abandonware, after all.

I feel very strongly about the importance of learning from the past, and not making the same mistakes over and over due to lack of historical perspective. I was particularly inspired by Bret Victor's talk at the DBX conference[1]. That's what motivated me to make this available in the most accessible way possible.

[1] http://worrydream.com/dbx/

I respect that. I'm very impressed with the speed of that emulator too.

I don't know about the other games, but Wolfenstein 3D is definitely not abandonware. You can still buy it on Steam, XBLA, PSN and other places.

That image has the free shareware version of Wolf3D. It has only episode 1 and is free to distribute to anyone.