Official Lego Technic Advanced - Showcasing some of the Advanced Technic models. Features some Flash presentations. - http://technic.lego.com/en-US/default.aspx
Technica - History of Technic, set index, and a technic element registry. - http://isodomos.com/technica/technica.html
Lego Technic Sets by Number - A catalog of Lego sets by product number (and Euro Number), year, set name, and thumbnail image. - http://www.nd.edu/~lego/grp2/www/techlst2.htm
Lego Ergo Sum - Various vehicles made by Fredrik Glöckner. Instructions for many of the models. - http://www.math.uio.no/~fredrigl/technic/
Doug's Lego Technic - Featuring his Tri-star ATV and other Lego robotic models. - http://www.visi.com/~dc/
Construction Toy Homepage - Lego Technic model reviews with images, a few original creations, and some non-Lego product links. - http://www.chem.sunysb.edu/msl/LEGO/
Directional Transmission - A Lego transmission that runs different output shafts depending on which direction the input is driven. - http://www.sonic.net/~rci/transmission.htm
rec.toys.lego Set Reviews - Technic section of the rec.toys.lego set review archive. - http://alumni.cse.ucsc.edu/~dulcaoin/reviews/noframes/index7.html