Bostrom, Nick - Advanced topics in transhumanism with informative material in analytic philosophy and computational neuroscience.
Davis, John K. - Transhumanist and technology advocate. Incorporates the former Transhumanist Unitarian Universalist Network.
Hanson, Robin - Economist and polymath; inventor of "Ideas Futures" markets; allegedly open-minded and politically undogmatic. His homepage is immodest(?) and says much about him, not necessarily bad things.
Machado, Romana - Essays and press appearances from the computer programmer, transhumanist, and extropian.
Magalhães, João Pedro de - Researcher of human aging, with several essays about transhumanism, human nature, and the ethics of new technologies.
More, Max - Futurist, co-founder and chairman of the Extropy Institute.
Pearce, David: HedWeb - Interests: how biotechnology will allow us to get rid of suffering in all sentient life (allegedly); animal rights; consciousness; psychopharmacology; and "Why does anything exist?" An attractive, thought-provoking, and many-tentacled site.
Tipler, Frank J. - Mathematician and originator of the "Omega Point" theory that the universe is finite, and therefore ultimately controllable in its entirety by sentients.
Vita-More, Natasha - Founder and director of the Transhumanist Arts and Culture World Center, president of the Extropy Institute.
Yudkowsky, Eliezer - Research Fellow of the Singularity Institute, author of "Friendly AI" and "Staring into the Singularity". His Web complex, "The Low Beyond", contains professional and personal writings.