Just visit https://meet.jit.si/WikiSuite with a modern browser, and ask a friend to join you there
Please see: https://wikisuite.chat/XMPP
https://demo.tiki.org/
We are working on creating more interesting demos, especially to showcase http://tikitrackers.org/
https://app.xibo.org.uk/shop/cloud-demo
No demo available yet
See also: How to build a system to demo WikiSuite