An easy way to try ST-72 is in your browser here: https://lively-web.org/users/Dan/ALTO-Smalltalk-72.html and ST-78 here: https://lively-web.org/users/bert/Smalltalk-78.html

The above links run emulators in Javascript and have been used for live demos as well (see https://youtu.be/AnrlSqtpOkw?t=2m29s for a fun one)

Related, for a Javascript based live system check out https://www.lively-kernel.org/ (also created by Dan Ingalls).

Thanks for posting the links.

The Lively project evolved over time:

- https://www.lively-kernel.org is from the Sun Labs / HPI days (check out the ancient http://sunlabs-kernel.lively-web.org, fully SVG based rendering :D)

- Lively Web: https://lively-web.org A live, programmable wiki (2012-2015)

- Since 2016 we are working on lively.next: https://lively-next.org. lively.next will focus more on the "personal environment" aspect.