Future UIs vs. today's canonical window system: user focus, computer's role, interface control, syntax, object visibility, interaction stream, bandwidth, tracking feedback, interface locus, user programming, software packaging.

Alertbox article by Jacob Nielson discussing the limitations and pitfalls of PDF as an online publishing tool.

An article by Jakob Nielsen discussing intranet uniformity.

A classic article by Jakob Nielsen.

Sites are getting better at using minimalist design, maintaining archives, and offering services. However, these advances entail their own usability problems, as several prominent mistakes from 2003 show.

Jakob Nielsen shares his thoughts on usability.