Kai is one of the uber-lispers. He’s very active on various emacs mailing list and news groups. He’s quick to lend a hand and patient with explanations. – DougAlcorn
He’s great fun to talk to on the #emacs irc channel as well – ShaeErisson
I like him too – artist
He rules. Also, he posted his ~/.viper file to comp.emacs the other day.

An archive of his home page can be found in the big archive. There’s also a more formal web page.

He uses Emacs.

One of the things you’ll find there is TrampMode (formerly rcp.el).

Also, he’s written the IndentationTutorial, a precursor to the GnusTutorial, and others.

He also did nnir.el.