You can start using it here immediately, or you can integrate it into your own website.
Take a look at the demo page for other examples of how Converse.js can be configured and used.
No problem! With converse.js you can register an account on any public XMPP server that allows registration.
I'm available for paid-for features, custom development and consulting.
However, please don't contact me personally for free support, use the other channels mentioned above. Here's my contact form.
Converse.js is a software commons; available at no cost to you and every other person on earth. Sponsorships allow us to fund further development and improvements and are greatly appreciated. If you'd like to sponsor this project, please visit Patreon page or Liberapay